Bump version for 0.10.0

Pin Traefik to v2.9.9

.github/workflows/ci.yml

@@ -8,12 +8,15 @@ jobs:
           - "2.7"
           - "3.1"
           - "3.2"
+        gemfile:
+          - Gemfile
+          - gemfiles/rails_edge.gemfile
         continue-on-error: [false]
-
     name: ${{ format('Tests (Ruby {0})', matrix.ruby-version) }}
     runs-on: ubuntu-latest
     continue-on-error: ${{ matrix.continue-on-error }}
-
+    env:
+      BUNDLE_GEMFILE: ${{ github.workspace }}/${{ matrix.gemfile }}
     steps:
       - uses: actions/checkout@v2
 

.github/workflows/docker-publish.yml

@@ -0,0 +1,41 @@
+name: Docker
+
+on:
+  release:
+    types: [created]
+    tags:
+      - 'v*'
+
+jobs:
+  build-and-push-image:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v3
+      -
+        name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+      -
+        name: Login to GitHub Container Registry
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      -
+        name: Build and push
+        uses: docker/build-push-action@v3
+        with:
+          context: .
+          platforms: linux/amd64,linux/arm64
+          push: true
+          tags: |
+            ghcr.io/mrsked/mrsk:latest
+            ghcr.io/mrsked/mrsk:${{ github.ref_name }}

.gitignore

@@ -1,4 +1,5 @@
 .byebug_history
 *.gem
 coverage/*
-.DS_Store
+.DS_Store
+gemfiles/*.lock

CODE_OF_CONDUCT.md

@@ -0,0 +1,41 @@
+# Contributor Code of Conduct
+
+As contributors and maintainers of the MRSK project, we pledge to create a welcoming and inclusive environment for everyone. We value the participation of each member of our community and want all contributors to feel respected and valued.
+
+We are committed to providing a harassment-free experience for everyone, regardless of gender, gender identity and expression, sexual orientation, disability, physical appearance, body size, race, age, or religion (or lack thereof). We do not tolerate harassment of participants in any form.
+
+This code of conduct applies to all MRSK project spaces, including but not limited to project code, issue trackers, chat rooms, and mailing lists. Violations of this code of conduct may result in removal from the project community.
+
+## Our standards
+
+Examples of behavior that contributes to creating a positive environment include:
+
+- Using welcoming and inclusive language
+- Being respectful of differing viewpoints and experiences
+- Gracefully accepting constructive criticism
+- Focusing on what is best for the community
+- Showing empathy towards other community members
+
+Examples of unacceptable behavior by participants include:
+
+- The use of sexualized language or imagery and unwelcome sexual attention or advances
+- Trolling, insulting/derogatory comments, and personal or political attacks
+- Public or private harassment
+- Publishing others' private information, such as a physical or electronic address, without explicit permission
+- Other conduct which could reasonably be considered inappropriate in a professional setting
+
+## Responsibilities
+
+Project maintainers are responsible for clarifying the standards of acceptable behavior and are expected to take appropriate and fair corrective action in response to any instances of unacceptable behavior.
+
+Project maintainers have the right and responsibility to remove, edit, or reject comments, commits, code, wiki edits, issues, and other contributions that are not aligned with this Code of Conduct, or to ban temporarily or permanently any contributor for other behaviors that they deem inappropriate, threatening, offensive, or harmful.
+
+## Reporting
+
+If you are subject to or witness unacceptable behavior, or have any other concerns, please notify a project maintainer. All reports will be kept confidential and will be reviewed and investigated promptly.
+
+We will investigate every complaint and take appropriate action. We reserve the right to remove any content that violates this Code of Conduct, or to temporarily or permanently ban any contributor for other behaviors that we deem inappropriate, threatening, offensive, or harmful.
+
+## Attribution
+
+This Code of Conduct is adapted from the Contributor Covenant, version 1.4, available at <https://www.contributor-covenant.org/version/1/4/code-of-conduct.html>.

CONTRIBUTING.md

@@ -0,0 +1,49 @@
+# Contributing to MRSK development
+
+Thank you for considering contributing to MRSK! This document outlines some guidelines for contributing to this open source project.
+
+Please make sure to review our [Code of Conduct](CODE_OF_CONDUCT.md) before contributing to MRSK.
+
+There are several ways you can contribute to the betterment of the project:
+
+- **Report an issue?** - If the issue isn’t reported, we can’t fix it. Please report any bugs, feature, and/or improvement requests on the [MRSK GitHub Issues tracker](https://github.com/mrsked/mrsk/issues).
+- **Submit patches** - Do you have a new feature or a fix you'd like to share? [Submit a pull request](https://github.com/mrsked/mrsk/pulls)!
+- **Write blog articles** - Are you using MRSK? We'd love to hear how you're using it with your projects. Write a tutorial and post it on your blog!
+
+## Issues
+
+If you encounter any issues with the project, please check the [existing issues](https://github.com/mrsked/mrsk/issues) first to see if the issue has already been reported. If the issue hasn't been reported, please open a new issue with a clear description of the problem and steps to reproduce it.
+
+## Pull Requests
+
+Please keep the following guidelines in mind when opening a pull request:
+
+- Ensure that your code passes the project's minitests by running ./bin/test.
+- Provide a clear and detailed description of your changes.
+- Keep your changes focused on a single concern.
+- Write clean and readable code that follows the project's code style.
+- Use descriptive variable and function names.
+- Write clear and concise commit messages.
+- Add tests for your changes, if possible.
+- Ensure that your changes don't break existing functionality.
+
+#### Commit message guidline
+
+A good commit message should describe what changed and why.
+
+## Development
+
+The `main` branch is regularly built and tested, but it is not guaranteed to be completely stable. Tags are created regularly from release branches to indicate new official, stable release versions of MRSK.
+
+MRSK is written in Ruby. You should have Ruby 3.2+ installed on your machine in order to work on MRSK. If that's already setup, run `bundle` in the root directory to install all dependencies. Then you can run `bin/test` to run all tests.
+
+1. Fork the project repository.
+2. Create a new branch for your contribution.
+3. Write your code or make the desired changes.
+4. **Ensure that your code passes the project's minitests by running ./bin/test.**
+5. Commit your changes and push them to your forked repository.
+6. [Open a pull request](https://github.com/mrsked/mrsk/pulls) to the main project repository with a detailed description of your changes.
+
+## License
+
+MRSK is released under the MIT License. By contributing to this project, you agree to license your contributions under the same license.

Dockerfile

@@ -0,0 +1,36 @@
+# Use the official Ruby 3.2.0 Alpine image as the base image
+FROM ruby:3.2.0-alpine
+
+# Install  docker/buildx-bin
+COPY --from=docker/buildx-bin /buildx /usr/libexec/docker/cli-plugins/docker-buildx
+
+# Set the working directory to /mrsk
+WORKDIR /mrsk
+
+# Copy the Gemfile, Gemfile.lock into the container
+COPY Gemfile Gemfile.lock mrsk.gemspec ./
+
+# Required in mrsk.gemspec
+COPY lib/mrsk/version.rb /mrsk/lib/mrsk/version.rb
+
+# Install system dependencies
+RUN apk add --no-cache --update build-base git docker openrc \
+    && rc-update add docker boot \
+    && gem install bundler --version=2.4.3 \
+    && bundle install
+
+# Copy the rest of our application code into the container.
+# We do this after bundle install, to avoid having to run bundle
+# everytime we do small fixes in the source code.
+COPY . .
+
+# Install the gem locally from the project folder
+RUN gem build mrsk.gemspec && \
+    gem install ./mrsk-*.gem --no-document
+
+# Set the working directory to /workdir
+WORKDIR /workdir
+
+# Set the entrypoint to run the installed binary in /workdir
+# Example:  docker run -it -v "$PWD:/workdir" mrsk init
+ENTRYPOINT ["mrsk"]

Gemfile

@@ -2,7 +2,3 @@ source 'https://rubygems.org'
 git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
 gemspec
-
-gem "debug"
-gem "mocha"
-gem "railties"

Gemfile.lock

@@ -1,9 +1,11 @@
 PATH
   remote: .
   specs:
-    mrsk (0.6.0)
+    mrsk (0.10.0)
       activesupport (>= 7.0)
+      bcrypt_pbkdf (~> 1.0)
       dotenv (~> 2.8)
+      ed25519 (~> 1.2)
       sshkit (~> 1.21)
       thor (~> 1.2)
       zeitwerk (~> 2.5)
@@ -11,88 +13,79 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
-    actionpack (7.0.4)
-      actionview (= 7.0.4)
-      activesupport (= 7.0.4)
+    actionpack (7.0.4.3)
+      actionview (= 7.0.4.3)
+      activesupport (= 7.0.4.3)
       rack (~> 2.0, >= 2.2.0)
       rack-test (>= 0.6.3)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.0, >= 1.2.0)
-    actionview (7.0.4)
-      activesupport (= 7.0.4)
+    actionview (7.0.4.3)
+      activesupport (= 7.0.4.3)
       builder (~> 3.1)
       erubi (~> 1.4)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.1, >= 1.2.0)
-    activesupport (7.0.4)
+    activesupport (7.0.4.3)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 1.6, < 2)
       minitest (>= 5.1)
       tzinfo (~> 2.0)
+    bcrypt_pbkdf (1.1.0)
     builder (3.2.4)
-    concurrent-ruby (1.1.10)
+    concurrent-ruby (1.2.2)
     crass (1.0.6)
     debug (1.7.1)
-      irb (>= 1.5.0)
-      reline (>= 0.3.1)
     dotenv (2.8.1)
+    ed25519 (1.3.0)
     erubi (1.12.0)
     i18n (1.12.0)
       concurrent-ruby (~> 1.0)
-    io-console (0.6.0)
-    irb (1.6.2)
-      reline (>= 0.3.0)
     loofah (2.19.1)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     method_source (1.0.0)
-    minitest (5.17.0)
+    minitest (5.18.0)
     mocha (2.0.2)
       ruby2_keywords (>= 0.0.5)
     net-scp (4.0.0)
       net-ssh (>= 2.6.5, < 8.0.0)
-    net-ssh (7.0.1)
-    nokogiri (1.14.0-arm64-darwin)
+    net-ssh (7.1.0)
+    nokogiri (1.14.2-arm64-darwin)
       racc (~> 1.4)
-    nokogiri (1.14.0-x86_64-darwin)
+    nokogiri (1.14.2-x86_64-darwin)
       racc (~> 1.4)
-    nokogiri (1.14.0-x86_64-linux)
+    nokogiri (1.14.2-x86_64-linux)
       racc (~> 1.4)
     racc (1.6.2)
-    rack (2.2.5)
-    rack-test (2.0.2)
+    rack (2.2.6.4)
+    rack-test (2.1.0)
       rack (>= 1.3)
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
       nokogiri (>= 1.6)
-    rails-html-sanitizer (1.4.4)
+    rails-html-sanitizer (1.5.0)
       loofah (~> 2.19, >= 2.19.1)
-    railties (7.0.4)
-      actionpack (= 7.0.4)
-      activesupport (= 7.0.4)
+    railties (7.0.4.3)
+      actionpack (= 7.0.4.3)
+      activesupport (= 7.0.4.3)
       method_source
       rake (>= 12.2)
       thor (~> 1.0)
       zeitwerk (~> 2.5)
     rake (13.0.6)
-    reline (0.3.2)
-      io-console (~> 0.5)
     ruby2_keywords (0.0.5)
-    sshkit (1.21.3)
+    sshkit (1.21.4)
       net-scp (>= 1.1.2)
       net-ssh (>= 2.8.0)
     thor (1.2.1)
-    tzinfo (2.0.5)
+    tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
-    zeitwerk (2.6.6)
+    zeitwerk (2.6.7)
 
 PLATFORMS
-  arm64-darwin-20
-  arm64-darwin-21
-  arm64-darwin-22
-  x86_64-darwin-20
-  x86_64-darwin-21
-  x86_64-darwin-22
+  arm64-darwin
+  x86_64-darwin
   x86_64-linux
 
 DEPENDENCIES

README.md

@@ -1,10 +1,26 @@
 # MRSK
 
-MRSK deploys web apps in containers to servers running Docker with zero downtime. It uses the dynamic reverse-proxy Traefik to hold requests while the new application container is started and the old one is stopped. It works seamlessly across multiple hosts, using SSHKit to execute commands.
+MRSK deploys web apps anywhere from bare metal to cloud VMs using Docker with zero downtime. It uses the dynamic reverse-proxy Traefik to hold requests while the new application container is started and the old one is stopped. It works seamlessly across multiple hosts, using SSHKit to execute commands. It was built for Rails applications, but works with any type of web app that can be containerized with Docker.
+
+Watch the screencast: https://www.youtube.com/watch?v=LL1cV2FXZ5I
+
+Join us on Discord: https://discord.gg/YgHVT7GCXS
 
 ## Installation
 
-Install MRSK globally with `gem install mrsk`. Then, inside your app directory, run `mrsk init` (or `mrsk init --bundle` within Rails apps where you want a bin/mrsk binstub). Now edit the new file `config/deploy.yml`. It could look as simple as this:
+If you have a Ruby environment available, you can install MRSK globally with:
+
+```sh
+gem install mrsk
+```
+
+...otherwise, you can run a dockerized version via an alias (add this to your ${SHELL}rc to simplify re-use):
+
+```sh
+alias mrsk='docker run --rm -it -v $HOME/.ssh:/root/.ssh -v /var/run/docker.sock:/var/run/docker.sock -v ${PWD}/:/workdir  ghcr.io/mrsked/mrsk'
+```
+
+Then, inside your app directory, run `mrsk init` (or `mrsk init --bundle` within Rails apps where you want a bin/mrsk binstub). Now edit the new file `config/deploy.yml`. It could look as simple as this:
 
 ```yaml
 service: hey
@@ -14,7 +30,8 @@ servers:
   - 192.168.0.2
 registry:
   username: registry-user-name
-  password: <%= ENV.fetch("MRSK_REGISTRY_PASSWORD") %>
+  password:
+    - MRSK_REGISTRY_PASSWORD
 env:
   secret:
     - RAILS_MASTER_KEY
@@ -30,24 +47,49 @@ mrsk deploy
 
 This will:
 
-1. Connect to the servers over SSH (using root by default, authenticated by your loaded ssh key)
-2. Install Docker on any server that might be missing it (using apt-get)
+1. Connect to the servers over SSH (using root by default, authenticated by your ssh key)
+2. Install Docker on any server that might be missing it (using apt-get): root access is needed via ssh for this.
 3. Log into the registry both locally and remotely
 4. Build the image using the standard Dockerfile in the root of the application.
 5. Push the image to the registry.
-6. Pull the image from the registry on the servers.
+6. Pull the image from the registry onto the servers.
 7. Ensure Traefik is running and accepting traffic on port 80.
-8. Stop any containers running a previous versions of the app.
+8. Ensure your app responds with `200 OK` to `GET /up`.
 9. Start a new container with the version of the app that matches the current git version hash.
-10. Prune unused images and stopped containers to ensure servers don't fill up.
+10. Stop the old container running the previous version of the app.
+11. Prune unused images and stopped containers to ensure servers don't fill up.
 
 Voila! All the servers are now serving the app on port 80. If you're just running a single server, you're ready to go. If you're running multiple servers, you need to put a load balancer in front of them.
 
-## Why not just run Capistrano or Kubernetes?
+## Vision
 
-MRSK basically is Capistrano for Containers, which allow us to use vanilla servers as the hosts. No need to ensure that the servers have just the right version of Ruby or other dependencies you need. That all lives in the Docker image now. You can boot a brand new Ubuntu (or whatever) server, add it to the deploy servers of MRSK, and it'll be auto-provisioned with Docker, and run right away. Docker's layer caching also allows for quicker deployments with less mucking about on the server. And the images built for MRSK can be used for CI or later introspection.
+In the past decade+, there's been an explosion in commercial offerings that make deploying web apps easier. Heroku kicked it off with an incredible offering that stayed ahead of the competition seemingly forever. These days we have excellent alternatives like Fly.io and Render. And hosted Kubernetes is making things easier too on AWS, GCP, Digital Ocean, and elsewhere. But these are all offerings that have you renting computers in the cloud at a premium. If you want to run on your own hardware, or even just have a clear migration path to do so in the future, you need to carefully consider how locked in you get to these commercial platforms. Preferably before the bills swallow your business whole!
 
-Kubernetes is a beast. Running it yourself on your own hardware is not for the faint of heart. It's a fine option if you want to run on someone else's platform, like Render or Fly, but if you'd like the freedom to move between cloud and your own hardware, or even mix the two, MRSK is much simpler. You can see everything that's going on, it's just basic Docker commands being called.
+MRSK seeks to bring the advance in ergonomics pioneered by these commercial offerings to deploying web apps anywhere. Whether that's low-cost cloud options without the managed-service markup from the likes of Digital Ocean, Hetzner, OVH, etc, or it's your own colocated bare metal. To MRSK, it's all the same. Feed the config file a list of IP addresses with vanilla Ubuntu servers that have seen no prep beyond an added SSH key, and you'll be running in literally minutes.
+
+This approach gives you enormous portability. You can have your web app deployed on several clouds at ease like this. Or you can buy the baseline with your own hardware, then deploy to a cloud before a big seasonal spike to get more capacity. When you're not locked into a single provider from a tooling perspective, there are a lot of compelling options available.
+
+Ultimately, MRSK is meant to compress the complexity of going to production using open source tooling that isn't tied to any commercial offering. Not to zero, mind you. You're probably still better off with a fully managed service if basic Linux or Docker is still difficult, but as soon as those concepts are familiar, you'll be ready to go with MRSK.
+
+## Why not just run Capistrano, Kubernetes or Docker Swarm?
+
+MRSK basically is Capistrano for Containers, without the need to carefully prepare servers in advance. No need to ensure that the servers have just the right version of Ruby or other dependencies you need. That all lives in the Docker image now. You can boot a brand new Ubuntu (or whatever) server, add it to the list of servers in MRSK, and it'll be auto-provisioned with Docker, and run right away. Docker's layer caching also speeds up deployments with less mucking about on the server. And the images built for MRSK can be used for CI or later introspection.
+
+Kubernetes is a beast. Running it yourself on your own hardware is not for the faint of heart. It's a fine option if you want to run on someone else's platform, either transparently [like Render](https://thenewstack.io/render-cloud-deployment-with-less-engineering/) or explicitly on AWS/GCP, but if you'd like the freedom to move between cloud and your own hardware, or even mix the two, MRSK is much simpler. You can see everything that's going on, it's just basic Docker commands being called.
+
+Docker Swarm is much simpler than Kubernetes, but it's still built on the same declarative model that uses state reconciliation. MRSK is intentionally designed around imperative commands, like Capistrano.
+
+Ultimately, there are a myriad of ways to deploy web apps, but this is the toolkit we're using at [37signals](https://37signals.com) to bring [HEY](https://www.hey.com) [home from the cloud](https://world.hey.com/dhh/why-we-re-leaving-the-cloud-654b47e0) without losing the advantages of modern containerization tooling.
+
+## Running MRSK from Docker
+
+MRSK is packaged up in a Docker container similarly to [rails/docked](https://github.com/rails/docked). This will allow you to run MRSK (from your application directory) without having to install any dependencies other than Docker. Add the following alias to your profile configuration to make working with the container more convenient:
+
+```bash
+alias mrsk="docker run -it --rm -v '${PWD}:/workdir' -v '${SSH_AUTH_SOCK}:/ssh-agent' -v /var/run/docker.sock:/var/run/docker.sock -e 'SSH_AUTH_SOCK=/ssh-agent' ghcr.io/mrsked/mrsk:latest"
+```
+
+Since MRSK uses SSH to establish a remote connection, it will need access to your SSH agent. The above command uses a volume mount to make it available inside the container and configures the SSH agent inside the container to make use of it.
 
 ## Configuration
 
@@ -60,6 +102,71 @@ MRSK_REGISTRY_PASSWORD=pw
 DB_PASSWORD=secret123
 ```
 
+### Using a generated .env file
+
+#### 1Password as a secret store
+
+If you're using a centralized secret store, like 1Password, you can create `.env.erb` as a template which looks up the secrets. Example of a .env.erb file:
+
+```erb
+<% if (session_token = `op signin --account my-one-password-account --raw`.strip) != "" %># Generated by mrsk envify
+GITHUB_TOKEN=<%= `gh config get -h github.com oauth_token`.strip %>
+MRSK_REGISTRY_PASSWORD=<%= `op read "op://Vault/Docker Hub/password" -n --session  #{session_token}` %>
+RAILS_MASTER_KEY=<%= `op read "op://Vault/My App/RAILS_MASTER_SECRET" -n --session #{session_token}` %>
+MYSQL_ROOT_PASSWORD=<%= `op read "op://Vault/My App/MYSQL_ROOT_PASSWORD" -n --session #{session_token}` %>
+<% else raise ArgumentError, "Session token missing" end %>
+```
+
+This template can safely be checked into git. Then everyone deploying the app can run `mrsk envify` when they setup the app for the first time or passwords change to get the correct `.env` file.
+
+If you need separate env variables for different destinations, you can set them with `.env.destination.erb` for the template, which will generate `.env.staging` when run with `mrsk envify -d staging`.
+
+#### Bitwarden as a secret store
+
+If you are using open source secret store like bitwarden, you can create `.env.erb` as a template which looks up the secrets.
+
+You can store `SOME_SECRET` in a secure note in bitwarden vault.
+
+```
+$ bw list items --search SOME_SECRET | jq
+? Master password: [hidden]
+
+[
+  {
+    "object": "item",
+    "id": "123123123-1232-4224-222f-234234234234",
+    "organizationId": null,
+    "folderId": null,
+    "type": 2,
+    "reprompt": 0,
+    "name": "SOME_SECRET",
+    "notes": "yyy",
+    "favorite": false,
+    "secureNote": {
+      "type": 0
+    },
+    "collectionIds": [],
+    "revisionDate": "2023-02-28T23:54:47.868Z",
+    "creationDate": "2022-11-07T03:16:05.828Z",
+    "deletedDate": null
+  }
+]
+```
+
+and extract the `id` of `SOME_SECRET` from the `json` above and use in the `erb` below.
+
+
+Example `.env.erb` file:
+
+```erb
+<% if (session_token=`bw unlock --raw`.strip) != "" %># Generated by mrsk envify
+SOME_SECRET=<%= `bw get notes 123123123-1232-4224-222f-234234234234 --session #{session_token}` %>
+<% else raise ArgumentError, "session_token token missing" end %>
+```
+
+Then everyone deploying the app can run `mrsk envify` and mrsk will generate `.env`
+
+
 ### Using another registry than Docker Hub
 
 The default registry is Docker Hub, but you can change it using `registry/server`:
@@ -67,10 +174,14 @@ The default registry is Docker Hub, but you can change it using `registry/server
 ```yaml
 registry:
   server: registry.digitalocean.com
-  username: registry-user-name
-  password: <%= ENV.fetch("MRSK_REGISTRY_PASSWORD") %>
+  username:
+    - DOCKER_REGISTRY_TOKEN
+  password:
+    - DOCKER_REGISTRY_TOKEN
 ```
 
+A reference to secret `DOCKER_REGISTRY_TOKEN` will look for `ENV["DOCKER_REGISTRY_TOKEN"]` on the machine running MRSK.
+
 ### Using a different SSH user than root
 
 The default SSH user is root, but you can change it using `ssh/user`:
@@ -135,6 +246,12 @@ volumes:
   - "/local/path:/container/path"
 ```
 
+### MRSK env variables
+
+The following env variables are set when your container runs:
+
+`MRSK_CONTAINER_NAME` : this contains the current container name and version
+
 ### Using different roles for servers
 
 If your application uses separate hosts for running jobs or other roles beyond the default web running, you can specify these hosts in a dedicated role with a new entrypoint command like so:
@@ -169,12 +286,12 @@ servers:
 
 You can specialize the default Traefik rules by setting labels on the containers that are being started:
 
-```
+```yaml
 labels:
-  traefik.http.routers.hey.rule: '''Host(`app.hey.com`)'''
+  traefik.http.routers.hey.rule: Host(`app.hey.com`)
 ```
 
-Note: The extra quotes are needed to ensure the rule is passed in correctly!
+Note: The backticks are needed to ensure the rule is passed in correctly and not treated as command substitution by Bash!
 
 This allows you to run multiple applications on the same server sharing the same Traefik instance and port.
 See https://doc.traefik.io/traefik/routing/routers/#rule for a full list of available routing rules.
@@ -195,9 +312,53 @@ servers:
       my-label: "50"
 ```
 
+### Using container options
+
+You can specialize the options used to start containers using the `options` definitions:
+
+```yaml
+servers:
+  web:
+    - 192.168.0.1
+    - 192.168.0.2
+  job:
+    hosts:
+      - 192.168.0.3
+      - 192.168.0.4
+    cmd: bin/jobs
+    options:
+      cap-add: true
+      cpu-count: 4
+```
+
+That'll start the job containers with `docker run ... --cap-add --cpu-count 4 ...`.
+
+### Configuring logging
+
+You can configure the logging driver and options passed to Docker using `logging`:
+
+```yaml
+logging:
+  driver: awslogs
+  options:
+    awslogs-region: "eu-central-2"
+    awslogs-group: "my-app"
+```
+
+If nothing is configured, the default option `max-size=10m` is used for all containers. The default logging driver of Docker is `json-file`.
+
+### Using a different stop wait time
+
+On a new deploy, each old running container is gracefully shut down with a `SIGTERM`, and after a grace period of `10` seconds a `SIGKILL` is sent.
+You can configure this value via the `stop_wait_time` option:
+
+```yaml
+stop_wait_time: 30
+```
+
 ### Using remote builder for native multi-arch
 
-If you're developing on ARM64 (like Apple Silicon), but you want to deploy on AMD64 (x86 64-bit), you can use multi-archecture images. By default, MRSK will setup a local buildx configuration that does this through QEMU emulation. But this can be quite slow, especially on the first build.
+If you're developing on ARM64 (like Apple Silicon), but you want to deploy on AMD64 (x86 64-bit), you can use multi-architecture images. By default, MRSK will setup a local buildx configuration that does this through QEMU emulation. But this can be quite slow, especially on the first build.
 
 If you want to speed up this process by using a remote AMD64 host to natively build the AMD64 part of the image, while natively building the ARM64 part locally, you can do so using builder options:
 
@@ -235,9 +396,29 @@ builder:
 
 This is also a good option if you're running MRSK from a CI server that shares architecture with the deployment servers.
 
+### Using a different Dockerfile or context when building
+
+If you need to pass a different Dockerfile or context to the build command (e.g. if you're using a monorepo or you have
+different Dockerfiles), you can do so in the builder options:
+
+```yaml
+# Use a different Dockerfile
+builder:
+  dockerfile: Dockerfile.xyz
+
+# Set context
+builder:
+  context: ".."
+
+# Set Dockerfile and context
+builder:
+  dockerfile: "../Dockerfile.xyz"
+  context: ".."
+```
+
 ### Using build secrets for new images
 
-Some images need a secret passed in during build time, like a GITHUB_TOKEN to give access to private gem repositories. This can be done by having the secret in ENV, then referencing it in the builder configuration:
+Some images need a secret passed in during build time, like a GITHUB_TOKEN, to give access to private gem repositories. This can be done by having the secret in ENV, then referencing it in the builder configuration:
 
 ```yaml
 builder:
@@ -247,14 +428,15 @@ builder:
 
 This build secret can then be referenced in the Dockerfile:
 
-```
+```dockerfile
 # Copy Gemfiles
 COPY Gemfile Gemfile.lock ./
 
-# Install dependencies, including private repositories via access token
+# Install dependencies, including private repositories via access token (then remove bundle cache with exposed GITHUB_TOKEN)
 RUN --mount=type=secret,id=GITHUB_TOKEN \
   BUNDLE_GITHUB__COM=x-access-token:$(cat /run/secrets/GITHUB_TOKEN) \
-  bundle install
+  bundle install && \
+  rm -rf /usr/local/bundle/cache
 ```
 
 ### Using command arguments for Traefik
@@ -263,10 +445,60 @@ You can customize the traefik command line:
 
 ```yaml
 traefik:
-  accesslog: true
-  accesslog.format: json
-  metrics.prometheus: true
-  metrics.prometheus.buckets: 0.1,0.3,1.2,5.0
+  args:
+    accesslog: true
+    accesslog.format: json
+```
+
+This will start the traefik container with `--accesslog=true accesslog.format=json`.
+
+### Traefik's host port binding
+
+By default Traefik binds to port 80 of the host machine, it can be configured to use an alternative port:
+
+```yaml
+traefik:
+  host_port: 8080
+```
+
+### Configure docker options for traefik
+
+We allow users to pass additional docker options to the trafik container like
+
+```yaml
+traefik:
+  options:
+    publish:
+    - 8080:8080
+    volumes:
+    - /tmp/example.json:/tmp/example.json
+    memory: 512m
+```
+
+This will start the traefik container with a command like: `docker run ... --volume /tmp/example.json:/tmp/example.json --publish 8080:8080 `
+
+
+### Configure alternate entrypoints for traefik
+
+You can configure multiple entrypoints for traefik like so:
+
+```yaml
+service: myservice
+
+labels:
+  traefik.tcp.routers.other.rule: 'HostSNI(`*`)'
+  traefik.tcp.routers.other.entrypoints: otherentrypoint
+  traefik.tcp.services.other.loadbalancer.server.port: 9000
+  traefik.http.routers.myservice.entrypoints: web
+  traefik.http.services.myservice.loadbalancer.server.port: 8080
+
+traefik:
+  options:
+    publish:
+      - 9000:9000
+  args:
+    entrypoints.web.address: ':80'
+    entrypoints.otherentrypoint.address: ':9000'
 ```
 
 ### Configuring build args for new images
@@ -282,14 +514,13 @@ builder:
 This build argument can then be used in the Dockerfile:
 
 ```
-# Private repositories need an access token during the build
 ARG RUBY_VERSION
 FROM ruby:$RUBY_VERSION-slim as base
 ```
 
 ### Using accessories for database, cache, search services
 
-You can manage your accessory services via MRSK as well. The services will build off public images, and will not be automatically updated when you deploy:
+You can manage your accessory services via MRSK as well. Accessories are long-lived services that your app depends on. They are not updated when you deploy.
 
 ```yaml
 accessories:
@@ -304,32 +535,92 @@ accessories:
         - MYSQL_ROOT_PASSWORD
     volumes:
       - /var/lib/mysql:/var/lib/mysql
+    options:
+      cpus: 4
+      memory: "2GB"
   redis:
     image: redis:latest
-    host: 1.1.1.4
+    role:
+      - web
     port: "36379:6379"
     volumes:
       - /var/lib/redis:/data
+  internal-example:
+    image: registry.digitalocean.com/user/otherservice:latest
+    host: 1.1.1.5
+    port: 44444
+```
+
+The hosts that the accessories will run on can be specified by hosts or roles:
+
+```yaml
+  # Single host
+  mysql:
+    host: 1.1.1.1
+  # Multiple hosts
+  redis:
+    hosts:
+      - 1.1.1.1
+      - 1.1.1.2
+  # By role
+  monitoring:
+    roles:
+      - web
+      - jobs
 ```
 
 Now run `mrsk accessory start mysql` to start the MySQL server on 1.1.1.3. See `mrsk accessory` for all the commands possible.
 
-### Using a generated .env file
+Accessory images must be public or tagged in your private registry.
 
-If you're using a centralized secret store, like 1Password, you can create `.env.erb` as a template which looks up the secrets. Example of a .env.erb file:
+### Using Cron
 
-```erb
-<% if (session_token = `op signin --account my-one-password-account --raw`.strip) != "" %># Generated by mrsk envify
-GITHUB_TOKEN=<%= `gh config get -h github.com oauth_token`.strip %>
-MRSK_REGISTRY_PASSWORD=<%= `op read "op://Vault/Docker Hub/password" -n --session  #{session_token}` %>
-RAILS_MASTER_KEY=<%= `op read "op://Vault/My App/RAILS_MASTER_SECRET" -n --session #{session_token}` %>
-MYSQL_ROOT_PASSWORD=<%= `op read "op://Vault/My App/MYSQL_ROOT_PASSWORD" -n --session #{session_token}` %>
-<% else raise ArgumentError, "Session token missing" end %>
+You can use a specific container to run your Cron jobs:
+
+```yaml
+servers:
+  cron:
+    hosts:
+      - 192.168.0.1
+    cmd:
+      bash -c "cat config/crontab | crontab - && cron -f"
 ```
 
-This template can safely be checked into git. Then everyone deploying the app can run `mrsk envify` when they setup the app for the first time or passwords change to get the correct `.env` file.
+This assumes the Cron settings are stored in `config/crontab`.
 
-If you need separate env variables for different destinations, you can set them with `.env.destination.erb` for the template, which will generate `.env.staging` when run with `mrsk envify -d staging`.
+### Using audit broadcasts
+
+If you'd like to broadcast audits of deploys, rollbacks, etc to a chatroom or elsewhere, you can configure the `audit_broadcast_cmd` setting with the path to a bin file that will be passed the audit line as the first argument:
+
+```yaml
+audit_broadcast_cmd:
+  bin/audit_broadcast
+```
+
+The broadcast command could look something like:
+
+```bash
+#!/usr/bin/env bash
+curl -q -d content="[My App] ${1}" https://3.basecamp.com/XXXXX/integrations/XXXXX/buckets/XXXXX/chats/XXXXX/lines
+```
+
+That'll post a line like follows to a preconfigured chatbot in Basecamp:
+
+```
+[My App] [dhh] Rolled back to version d264c4e92470ad1bd18590f04466787262f605de
+```
+
+### Using custom healthcheck path or port
+
+MRSK defaults to checking the health of your application again `/up` on port 3000. You can tailor both with the `healthcheck` setting:
+
+```yaml
+healthcheck:
+  path: /healthz
+  port: 4000
+```
+
+This will ensure your application is configured with a traefik label for the healthcheck against `/healthz` and that the pre-deploy healthcheck that MRSK performs is done against the same path on port 4000.
 
 ## Commands
 
@@ -398,7 +689,7 @@ mrsk app exec -i 'bin/rails console'
 ```
 
 
-### Running details to see state of containers
+### Running details to show state of containers
 
 You can see the state of your servers by running `mrsk details`:
 
@@ -446,9 +737,33 @@ Note that by default old containers are pruned after 3 days when you run `mrsk d
 
 If you wish to remove the entire application, including Traefik, containers, images, and registry session, you can run `mrsk remove`. This will leave the servers clean.
 
+## Locking
+
+Commands that are unsafe to run concurrently will take a deploy lock while they run. The lock is the `mrsk_lock` directory on the primary server.
+
+You can check the lock status with:
+
+```
+mrsk lock status
+
+Locked by: AN Other at 2023-03-24 09:49:03 UTC
+Version: 77f45c0686811c68989d6576748475a60bf53fc2
+Message: Automatic deploy lock
+```
+
+You can also manually acquire and release the lock
+
+```
+mrsk lock acquire -m "Doing maintanence"
+```
+
+```
+mrsk lock release
+```
+
 ## Stage of development
 
-This is alpha software. Lots of stuff is missing. Lots of stuff will keep moving around for a while.
+This is beta software. Commands may still move around. But we're live in production at [37signals](https://37signals.com).
 
 ## License
 

gemfiles/rails_edge.gemfile

@@ -0,0 +1,9 @@
+source 'https://rubygems.org'
+git_source(:github) { |repo| "https://github.com/#{repo}.git" }
+
+git "https://github.com/rails/rails.git" do
+  gem "railties"
+  gem "activesupport"
+end
+
+gemspec path: "../"

lib/mrsk.rb

@@ -1,6 +1,7 @@
 module Mrsk
 end
 
+require "active_support"
 require "zeitwerk"
 
 loader = Zeitwerk::Loader.for_gem

lib/mrsk/cli/accessory.rb

@@ -1,100 +1,113 @@
 class Mrsk::Cli::Accessory < Mrsk::Cli::Base
-  desc "boot [NAME]", "Boot accessory service on host (use NAME=all to boot all accessories)"
+  desc "boot [NAME]", "Boot new accessory service on host (use NAME=all to boot all accessories)"
   def boot(name)
-    if name == "all"
-      MRSK.accessory_names.each { |accessory_name| boot(accessory_name) }
-    else
-      with_accessory(name) do |accessory|
-        directories(name)
-        upload(name)
+    with_lock do
+      if name == "all"
+        MRSK.accessory_names.each { |accessory_name| boot(accessory_name) }
+      else
+        with_accessory(name) do |accessory|
+          directories(name)
+          upload(name)
 
-        on(accessory.host) do
-          execute *MRSK.auditor.record("accessory #{name} boot"), verbosity: :debug
-          execute *accessory.run
+          on(accessory.hosts) do
+            execute *MRSK.registry.login
+            execute *MRSK.auditor.record("Booted #{name} accessory"), verbosity: :debug
+            execute *accessory.run
+          end
+
+          audit_broadcast "Booted accessory #{name}" unless options[:skip_broadcast]
         end
       end
     end
   end
 
-  desc "upload [NAME]", "Upload accessory files to host"
+  desc "upload [NAME]", "Upload accessory files to host", hide: true
   def upload(name)
-    with_accessory(name) do |accessory|
-      on(accessory.host) do
-        execute *MRSK.auditor.record("accessory #{name} upload files"), verbosity: :debug
+    with_lock do
+      with_accessory(name) do |accessory|
+        on(accessory.hosts) do
+          accessory.files.each do |(local, remote)|
+            accessory.ensure_local_file_present(local)
 
-        accessory.files.each do |(local, remote)|
-          accessory.ensure_local_file_present(local)
-
-          execute *accessory.make_directory_for(remote)
-          upload! local, remote
-          execute :chmod, "755", remote
+            execute *accessory.make_directory_for(remote)
+            upload! local, remote
+            execute :chmod, "755", remote
+          end
         end
       end
     end
   end
 
-  desc "directories [NAME]", "Create accessory directories on host"
+  desc "directories [NAME]", "Create accessory directories on host", hide: true
   def directories(name)
-    with_accessory(name) do |accessory|
-      on(accessory.host) do
-        execute *MRSK.auditor.record("accessory #{name} create directories"), verbosity: :debug
-
-        accessory.directories.keys.each do |host_path|
-          execute *accessory.make_directory(host_path)
+    with_lock do
+      with_accessory(name) do |accessory|
+        on(accessory.hosts) do
+          accessory.directories.keys.each do |host_path|
+            execute *accessory.make_directory(host_path)
+          end
         end
       end
     end
   end
 
-  desc "reboot [NAME]", "Reboot accessory on host (stop container, remove container, start new container)"
+  desc "reboot [NAME]", "Reboot existing accessory on host (stop container, remove container, start new container)"
   def reboot(name)
-    with_accessory(name) do |accessory|
-      stop(name)
-      remove_container(name)
-      boot(name)
+    with_lock do
+      with_accessory(name) do |accessory|
+        stop(name)
+        remove_container(name)
+        boot(name)
+      end
     end
   end
 
-  desc "start [NAME]", "Start existing accessory on host"
+  desc "start [NAME]", "Start existing accessory container on host"
   def start(name)
-    with_accessory(name) do |accessory|
-      on(accessory.host) do
-        execute *MRSK.auditor.record("accessory #{name} start"), verbosity: :debug
-        execute *accessory.start
+    with_lock do
+      with_accessory(name) do |accessory|
+        on(accessory.hosts) do
+          execute *MRSK.auditor.record("Started #{name} accessory"), verbosity: :debug
+          execute *accessory.start
+        end
       end
     end
   end
 
-  desc "stop [NAME]", "Stop accessory on host"
+  desc "stop [NAME]", "Stop existing accessory container on host"
   def stop(name)
-    with_accessory(name) do |accessory|
-      on(accessory.host) do
-        execute *MRSK.auditor.record("accessory #{name} stop"), verbosity: :debug
-        execute *accessory.stop, raise_on_non_zero_exit: false
+    with_lock do
+      with_accessory(name) do |accessory|
+        on(accessory.hosts) do
+          execute *MRSK.auditor.record("Stopped #{name} accessory"), verbosity: :debug
+          execute *accessory.stop, raise_on_non_zero_exit: false
+        end
       end
     end
   end
 
-  desc "restart [NAME]", "Restart accessory on host"
+  desc "restart [NAME]", "Restart existing accessory container on host"
   def restart(name)
-    with_accessory(name) do
-      stop(name)
-      start(name)
+    with_lock do
+      with_accessory(name) do
+        stop(name)
+        start(name)
+      end
     end
   end
 
-  desc "details [NAME]", "Display details about accessory on host (use NAME=all to boot all accessories)"
+  desc "details [NAME]", "Show details about accessory on host (use NAME=all to show all accessories)"
   def details(name)
     if name == "all"
       MRSK.accessory_names.each { |accessory_name| details(accessory_name) }
     else
       with_accessory(name) do |accessory|
-        on(accessory.host) { puts capture_with_info(*accessory.info) }
+        on(accessory.hosts) { puts capture_with_info(*accessory.info) }
       end
     end
   end
 
-  desc "exec [NAME] [CMD]", "Execute a custom command on servers"
+  desc "exec [NAME] [CMD]", "Execute a custom command on servers (use --help to show options)"
   option :interactive, aliases: "-i", type: :boolean, default: false, desc: "Execute command over ssh for an interactive shell (use for console/bash)"
   option :reuse, type: :boolean, default: false, desc: "Reuse currently running container instead of starting a new one"
   def exec(name, cmd)
@@ -110,22 +123,22 @@ class Mrsk::Cli::Accessory < Mrsk::Cli::Base
 
       when options[:reuse]
         say "Launching command from existing container...", :magenta
-        on(accessory.host) do
-          execute *MRSK.auditor.record("accessory #{name} cmd '#{cmd}'"), verbosity: :debug
+        on(accessory.hosts) do
+          execute *MRSK.auditor.record("Executed cmd '#{cmd}' on #{name} accessory"), verbosity: :debug
           capture_with_info(*accessory.execute_in_existing_container(cmd))
         end
 
       else
         say "Launching command from new container...", :magenta
-        on(accessory.host) do
-          execute *MRSK.auditor.record("accessory #{name} cmd '#{cmd}'"), verbosity: :debug
+        on(accessory.hosts) do
+          execute *MRSK.auditor.record("Executed cmd '#{cmd}' on #{name} accessory"), verbosity: :debug
           capture_with_info(*accessory.execute_in_new_container(cmd))
         end
       end
     end
   end
 
-  desc "logs [NAME]", "Show log lines from accessory on host"
+  desc "logs [NAME]", "Show log lines from accessory on host (use --help to show options)"
   option :since, aliases: "-s", desc: "Show logs since timestamp (e.g. 2013-01-02T13:23:37Z) or relative (e.g. 42m for 42 minutes)"
   option :lines, type: :numeric, aliases: "-n", desc: "Number of log lines to pull from each server"
   option :grep, aliases: "-g", desc: "Show lines with grep match only (use this to fetch specific requests by id)"
@@ -136,7 +149,7 @@ class Mrsk::Cli::Accessory < Mrsk::Cli::Base
 
       if options[:follow]
         run_locally do
-          info "Following logs on #{accessory.host}..."
+          info "Following logs on #{accessory.hosts}..."
           info accessory.follow_logs(grep: grep)
           exec accessory.follow_logs(grep: grep)
         end
@@ -144,53 +157,63 @@ class Mrsk::Cli::Accessory < Mrsk::Cli::Base
         since = options[:since]
         lines = options[:lines].presence || ((since || grep) ? nil : 100) # Default to 100 lines if since or grep isn't set
 
-        on(accessory.host) do
+        on(accessory.hosts) do
           puts capture_with_info(*accessory.logs(since: since, lines: lines, grep: grep))
         end
       end
     end
   end
 
-  desc "remove [NAME]", "Remove accessory container and image from host (use NAME=all to boot all accessories)"
+  desc "remove [NAME]", "Remove accessory container, image and data directory from host (use NAME=all to remove all accessories)"
+  option :confirmed, aliases: "-y", type: :boolean, default: false, desc: "Proceed without confirmation question"
   def remove(name)
-    if name == "all"
-      MRSK.accessory_names.each { |accessory_name| remove(accessory_name) }
-    else
-      with_accessory(name) do
-        stop(name)
-        remove_container(name)
-        remove_image(name)
-        remove_service_directory(name)
+    with_lock do
+      if name == "all"
+        MRSK.accessory_names.each { |accessory_name| remove(accessory_name) }
+      else
+        if options[:confirmed] || ask("This will remove all containers, images and data directories for #{name}. Are you sure?", limited_to: %w( y N ), default: "N") == "y"
+          with_accessory(name) do
+            stop(name)
+            remove_container(name)
+            remove_image(name)
+            remove_service_directory(name)
+          end
+        end
       end
     end
   end
 
-  desc "remove_container [NAME]", "Remove accessory container from host"
+  desc "remove_container [NAME]", "Remove accessory container from host", hide: true
   def remove_container(name)
-    with_accessory(name) do |accessory|
-      on(accessory.host) do
-        execute *MRSK.auditor.record("accessory #{name} remove container"), verbosity: :debug
-        execute *accessory.remove_container
+    with_lock do
+      with_accessory(name) do |accessory|
+        on(accessory.hosts) do
+          execute *MRSK.auditor.record("Remove #{name} accessory container"), verbosity: :debug
+          execute *accessory.remove_container
+        end
       end
     end
   end
 
-  desc "remove_image [NAME]", "Remove accessory image from host"
+  desc "remove_image [NAME]", "Remove accessory image from host", hide: true
   def remove_image(name)
-    with_accessory(name) do |accessory|
-      on(accessory.host) do
-        execute *MRSK.auditor.record("accessory #{name} remove image"), verbosity: :debug
-        execute *accessory.remove_image
+    with_lock do
+      with_accessory(name) do |accessory|
+        on(accessory.hosts) do
+          execute *MRSK.auditor.record("Removed #{name} accessory image"), verbosity: :debug
+          execute *accessory.remove_image
+        end
       end
     end
   end
 
-  desc "remove_service_directory [NAME]", "Remove accessory directory used for uploaded files and data directories from host"
+  desc "remove_service_directory [NAME]", "Remove accessory directory used for uploaded files and data directories from host", hide: true
   def remove_service_directory(name)
-    with_accessory(name) do |accessory|
-      on(accessory.host) do
-        execute *MRSK.auditor.record("accessory #{name} remove service directory"), verbosity: :debug
-        execute *accessory.remove_service_directory
+    with_lock do
+      with_accessory(name) do |accessory|
+        on(accessory.hosts) do
+          execute *accessory.remove_service_directory
+        end
       end
     end
   end

lib/mrsk/cli/app.rb

@@ -1,29 +1,31 @@
 class Mrsk::Cli::App < Mrsk::Cli::Base
   desc "boot", "Boot app on servers (or reboot app if already running)"
   def boot
-    cli = self
+    with_lock do
+      say "Get most recent version available as an image...", :magenta unless options[:version]
+      using_version(version_or_latest) do |version|
+        say "Start container with version #{version} using a #{MRSK.config.readiness_delay}s readiness delay (or reboot if already running)...", :magenta
 
-    say "Ensure no other version of the app is running...", :magenta
-    stop
+        cli = self
 
-    say "Get most recent version available as an image...", :magenta unless options[:version]
-    using_version(options[:version] || most_recent_version_available) do |version|
-      say "Start container with version #{version} (or reboot if already running)...", :magenta
+        on(MRSK.hosts) do |host|
+          roles = MRSK.roles_on(host)
 
-      MRSK.config.roles.each do |role|
-        on(role.hosts) do |host|
-          execute *MRSK.auditor.record("app boot version #{version}"), verbosity: :debug
+          roles.each do |role|
+            execute *MRSK.auditor(role: role).record("Booted app version #{version}"), verbosity: :debug
 
-          begin
-            execute *MRSK.app.run(role: role.name)
-          rescue SSHKit::Command::Failed => e
-            if e.message =~ /already in use/
-              error "Rebooting container with same version already deployed on #{host}"
+            begin
+              if capture_with_info(*MRSK.app(role: role).container_id_for_version(version)).present?
+                tmp_version = "#{version}_#{SecureRandom.hex(8)}"
+                info "Renaming container #{version} to #{tmp_version} as already deployed on #{host}"
+                execute *MRSK.auditor(role: role).record("Renaming container #{version} to #{tmp_version}"), verbosity: :debug
+                execute *MRSK.app(role: role).rename_container(version: version, new_version: tmp_version)
+              end
 
-              cli.remove_container version
-              execute *MRSK.app.run(role: role.name)
-            else
-              raise
+              old_version = capture_with_info(*MRSK.app(role: role).current_running_version).strip
+              execute *MRSK.app(role: role).run
+              sleep MRSK.config.readiness_delay
+              execute *MRSK.app(role: role).stop(version: old_version), raise_on_non_zero_exit: false if old_version.present?
             end
           end
         end
@@ -31,28 +33,47 @@ class Mrsk::Cli::App < Mrsk::Cli::Base
     end
   end
 
-  desc "start", "Start existing app on servers (use --version=<git-hash> to designate specific version)"
+  desc "start", "Start existing app container on servers"
   def start
-    on(MRSK.hosts) do
-      execute *MRSK.auditor.record("app start version #{MRSK.version}"), verbosity: :debug
-      execute *MRSK.app.start, raise_on_non_zero_exit: false
+    with_lock do
+      on(MRSK.hosts) do |host|
+        roles = MRSK.roles_on(host)
+
+        roles.each do |role|
+          execute *MRSK.auditor.record("Started app version #{MRSK.config.version}"), verbosity: :debug
+          execute *MRSK.app(role: role).start, raise_on_non_zero_exit: false
+        end
+      end
     end
   end
 
-  desc "stop", "Stop app on servers"
+  desc "stop", "Stop app container on servers"
   def stop
-    on(MRSK.hosts) do
-      execute *MRSK.auditor.record("app stop"), verbosity: :debug
-      execute *MRSK.app.stop, raise_on_non_zero_exit: false
+    with_lock do
+      on(MRSK.hosts) do |host|
+        roles = MRSK.roles_on(host)
+
+        roles.each do |role|
+          execute *MRSK.auditor(role: role).record("Stopped app"), verbosity: :debug
+          execute *MRSK.app(role: role).stop, raise_on_non_zero_exit: false
+        end
+      end
     end
   end
 
-  desc "details", "Display details about app containers"
+  # FIXME: Drop in favor of just containers?
+  desc "details", "Show details about app containers"
   def details
-    on(MRSK.hosts) { |host| puts_by_host host, capture_with_info(*MRSK.app.info) }
+    on(MRSK.hosts) do |host|
+      roles = MRSK.roles_on(host)
+
+      roles.each do |role|
+        puts_by_host host, capture_with_info(*MRSK.app(role: role).info)
+      end
+    end
   end
 
-  desc "exec [CMD]", "Execute a custom command on servers"
+  desc "exec [CMD]", "Execute a custom command on servers (use --help to show options)"
   option :interactive, aliases: "-i", type: :boolean, default: false, desc: "Execute command over ssh for an interactive shell (use for console/bash)"
   option :reuse, type: :boolean, default: false, desc: "Reuse currently running container instead of starting a new one"
   def exec(cmd)
@@ -61,12 +82,12 @@ class Mrsk::Cli::App < Mrsk::Cli::Base
       say "Get current version of running container...", :magenta unless options[:version]
       using_version(options[:version] || current_running_version) do |version|
         say "Launching interactive command with version #{version} via SSH from existing container on #{MRSK.primary_host}...", :magenta
-        run_locally { exec MRSK.app.execute_in_existing_container_over_ssh(cmd, host: MRSK.primary_host) }
+        run_locally { exec MRSK.app(role: "web").execute_in_existing_container_over_ssh(cmd, host: MRSK.primary_host) }
       end
 
     when options[:interactive]
       say "Get most recent version available as an image...", :magenta unless options[:version]
-      using_version(options[:version] || most_recent_version_available) do |version|
+      using_version(version_or_latest) do |version|
         say "Launching interactive command with version #{version} via SSH from new container on #{MRSK.primary_host}...", :magenta
         run_locally { exec MRSK.app.execute_in_new_container_over_ssh(cmd, host: MRSK.primary_host) }
       end
@@ -77,38 +98,42 @@ class Mrsk::Cli::App < Mrsk::Cli::Base
         say "Launching command with version #{version} from existing container...", :magenta
 
         on(MRSK.hosts) do |host|
-          execute *MRSK.auditor.record("app cmd '#{cmd}' with version #{version}"), verbosity: :debug
-          puts_by_host host, capture_with_info(*MRSK.app.execute_in_existing_container(cmd))
+          roles = MRSK.roles_on(host)
+
+          roles.each do |role|
+            execute *MRSK.auditor(role: role).record("Executed cmd '#{cmd}' on app version #{version}"), verbosity: :debug
+            puts_by_host host, capture_with_info(*MRSK.app(role: role).execute_in_existing_container(cmd))
+          end
         end
       end
 
     else
       say "Get most recent version available as an image...", :magenta unless options[:version]
-      using_version(options[:version] || most_recent_version_available) do |version|
+      using_version(version_or_latest) do |version|
         say "Launching command with version #{version} from new container...", :magenta
         on(MRSK.hosts) do |host|
-          execute *MRSK.auditor.record("app cmd '#{cmd}' with version #{version}"), verbosity: :debug
+          execute *MRSK.auditor.record("Executed cmd '#{cmd}' on app version #{version}"), verbosity: :debug
           puts_by_host host, capture_with_info(*MRSK.app.execute_in_new_container(cmd))
         end
       end
     end
   end
 
-  desc "containers", "List all the app containers currently on servers"
+  desc "containers", "Show app containers on servers"
   def containers
     on(MRSK.hosts) { |host| puts_by_host host, capture_with_info(*MRSK.app.list_containers) }
   end
 
-  desc "images", "List all the app images currently on servers"
+  desc "images", "Show app images on servers"
   def images
     on(MRSK.hosts) { |host| puts_by_host host, capture_with_info(*MRSK.app.list_images) }
   end
 
-  desc "logs", "Show lines from app on servers"
-  option :since, aliases: "-s", desc: "Show logs since timestamp (e.g. 2013-01-02T13:23:37Z) or relative (e.g. 42m for 42 minutes)"
-  option :lines, type: :numeric, aliases: "-n", desc: "Number of log lines to pull from each server"
+  desc "logs", "Show log lines from app on servers (use --help to show options)"
+  option :since, aliases: "-s", desc: "Show lines since timestamp (e.g. 2013-01-02T13:23:37Z) or relative (e.g. 42m for 42 minutes)"
+  option :lines, type: :numeric, aliases: "-n", desc: "Number of lines to show from each server"
   option :grep, aliases: "-g", desc: "Show lines with grep match only (use this to fetch specific requests by id)"
-  option :follow, aliases: "-f", desc: "Follow logs on primary server (or specific host set by --hosts)"
+  option :follow, aliases: "-f", desc: "Follow log on primary server (or specific host set by --hosts)"
   def logs
     # FIXME: Catch when app containers aren't running
 
@@ -117,18 +142,26 @@ class Mrsk::Cli::App < Mrsk::Cli::Base
     if options[:follow]
       run_locally do
         info "Following logs on #{MRSK.primary_host}..."
-        info MRSK.app.follow_logs(host: MRSK.primary_host, grep: grep)
-        exec MRSK.app.follow_logs(host: MRSK.primary_host, grep: grep)
+
+        MRSK.specific_roles ||= ["web"]
+        role = MRSK.roles_on(MRSK.primary_host).first
+
+        info MRSK.app(role: role).follow_logs(host: MRSK.primary_host, grep: grep)
+        exec MRSK.app(role: role).follow_logs(host: MRSK.primary_host, grep: grep)
       end
     else
       since = options[:since]
       lines = options[:lines].presence || ((since || grep) ? nil : 100) # Default to 100 lines if since or grep isn't set
 
       on(MRSK.hosts) do |host|
-        begin
-          puts_by_host host, capture_with_info(*MRSK.app.logs(since: since, lines: lines, grep: grep))
-        rescue SSHKit::Command::Failed
-          puts_by_host host, "Nothing found"
+        roles = MRSK.roles_on(host)
+
+        roles.each do |role|
+          begin
+            puts_by_host host, capture_with_info(*MRSK.app(role: role).logs(since: since, lines: lines, grep: grep))
+          rescue SSHKit::Command::Failed
+            puts_by_host host, "Nothing found"
+          end
         end
       end
     end
@@ -136,36 +169,53 @@ class Mrsk::Cli::App < Mrsk::Cli::Base
 
   desc "remove", "Remove app containers and images from servers"
   def remove
-    remove_containers
-    remove_images
+    with_lock do
+      stop
+      remove_containers
+      remove_images
+    end
   end
 
-  desc "remove_container [VERSION]", "Remove app container with given version from servers"
+  desc "remove_container [VERSION]", "Remove app container with given version from servers", hide: true
   def remove_container(version)
-    on(MRSK.hosts) do
-      execute *MRSK.auditor.record("app remove container #{version}"), verbosity: :debug
-      execute *MRSK.app.remove_container(version: version)
+    with_lock do
+      on(MRSK.hosts) do |host|
+        roles = MRSK.roles_on(host)
+
+        roles.each do |role|
+          execute *MRSK.auditor(role: role).record("Removed app container with version #{version}"), verbosity: :debug
+          execute *MRSK.app(role: role).remove_container(version: version)
+        end
+      end
     end
   end
 
-  desc "remove_containers", "Remove all app containers from servers"
+  desc "remove_containers", "Remove all app containers from servers", hide: true
   def remove_containers
-    on(MRSK.hosts) do
-      execute *MRSK.auditor.record("app remove containers"), verbosity: :debug
-      execute *MRSK.app.remove_containers
+    with_lock do
+      on(MRSK.hosts) do |host|
+        roles = MRSK.roles_on(host)
+
+        roles.each do |role|
+          execute *MRSK.auditor(role: role).record("Removed all app containers"), verbosity: :debug
+          execute *MRSK.app(role: role).remove_containers
+        end
+      end
     end
   end
 
-  desc "remove_images", "Remove all app images from servers"
+  desc "remove_images", "Remove all app images from servers", hide: true
   def remove_images
-    on(MRSK.hosts) do
-      execute *MRSK.auditor.record("app remove images"), verbosity: :debug
-      execute *MRSK.app.remove_images
+    with_lock do
+      on(MRSK.hosts) do
+        execute *MRSK.auditor.record("Removed all app images"), verbosity: :debug
+        execute *MRSK.app.remove_images
+      end
     end
   end
 
-  desc "current_version", "Shows the version currently running"
-  def current_version
+  desc "version", "Show app version currently running on servers"
+  def version
     on(MRSK.hosts) { |host| puts_by_host host, capture_with_info(*MRSK.app.current_running_version).strip }
   end
 
@@ -184,15 +234,13 @@ class Mrsk::Cli::App < Mrsk::Cli::Base
       end
     end
 
-    def most_recent_version_available(host: MRSK.primary_host)
-      version = nil
-      on(host) { version = capture_with_info(*MRSK.app.most_recent_version_from_available_images).strip }
-      version.presence
-    end
-
     def current_running_version(host: MRSK.primary_host)
       version = nil
       on(host) { version = capture_with_info(*MRSK.app.current_running_version).strip }
       version.presence
     end
+
+    def version_or_latest
+      options[:version] || "latest"
+    end
 end

lib/mrsk/cli/base.rb

@@ -6,6 +6,8 @@ module Mrsk::Cli
   class Base < Thor
     include SSHKit::DSL
 
+    class LockError < StandardError; end
+
     def self.exit_on_failure?() true end
 
     class_option :verbose, type: :boolean, aliases: "-v", desc: "Detailed logging"
@@ -17,13 +19,15 @@ module Mrsk::Cli
     class_option :hosts, aliases: "-h", desc: "Run commands on these hosts instead of all (separate by comma)"
     class_option :roles, aliases: "-r", desc: "Run commands on these roles instead of all (separate by comma)"
 
-    class_option :config_file, aliases: "-c", default: "config/deploy.yml", desc: "Path to config file (default: config/deploy.yml)"
-    class_option :destination, aliases: "-d", desc: "Specify destination to be used for config file (west -> deploy.west.yml)"
+    class_option :config_file, aliases: "-c", default: "config/deploy.yml", desc: "Path to config file"
+    class_option :destination, aliases: "-d", desc: "Specify destination to be used for config file (staging -> deploy.staging.yml)"
+
+    class_option :skip_broadcast, aliases: "-B", type: :boolean, default: false, desc: "Skip audit broadcasts"
 
     def initialize(*)
       super
       load_envs
-      initialize_commander(options)
+      initialize_commander(options_with_subcommand_class_options)
     end
 
     private
@@ -35,16 +39,12 @@ module Mrsk::Cli
         end
       end
 
+      def options_with_subcommand_class_options
+        options.merge(@_initializer.last[:class_options] || {})
+      end
+
       def initialize_commander(options)
         MRSK.tap do |commander|
-          commander.config_file = Pathname.new(File.expand_path(options[:config_file]))
-          commander.destination = options[:destination]
-          commander.version     = options[:version]
-
-          commander.specific_hosts    = options[:hosts]&.split(",")
-          commander.specific_roles    = options[:roles]&.split(",")
-          commander.specific_primary! if options[:primary]
-
           if options[:verbose]
             ENV["VERBOSE"] = "1" # For backtraces via cli/start
             commander.verbosity = :debug
@@ -53,15 +53,59 @@ module Mrsk::Cli
           if options[:quiet]
             commander.verbosity = :error
           end
+
+          commander.configure \
+            config_file: Pathname.new(File.expand_path(options[:config_file])),
+            destination: options[:destination],
+            version: options[:version]
+
+          commander.specific_hosts    = options[:hosts]&.split(",")
+          commander.specific_roles    = options[:roles]&.split(",")
+          commander.specific_primary! if options[:primary]
         end
       end
 
       def print_runtime
         started_at = Time.now
         yield
+        return Time.now - started_at
       ensure
         runtime = Time.now - started_at
         puts "  Finished all in #{sprintf("%.1f seconds", runtime)}"
       end
+
+      def audit_broadcast(line)
+        run_locally { execute *MRSK.auditor.broadcast(line), verbosity: :debug }
+      end
+
+      def with_lock
+        acquire_lock
+
+        yield
+      ensure
+        release_lock
+      end
+
+      def acquire_lock
+        if MRSK.lock_count == 0
+          say "Acquiring the deploy lock"
+          on(MRSK.primary_host) { execute *MRSK.lock.acquire("Automatic deploy lock", MRSK.config.version) }
+        end
+        MRSK.lock_count += 1
+      rescue SSHKit::Runner::ExecuteError => e
+        if e.message =~ /cannot create directory/
+          invoke "mrsk:cli:lock:status", []
+        end
+
+        raise LockError, "Deploy lock found"
+      end
+
+      def release_lock
+        MRSK.lock_count -= 1
+        if MRSK.lock_count == 0
+          say "Releasing the deploy lock"
+          on(MRSK.primary_host) { execute *MRSK.lock.release }
+        end
+      end
   end
 end

lib/mrsk/cli/build.rb

@@ -1,65 +1,76 @@
 class Mrsk::Cli::Build < Mrsk::Cli::Base
-  desc "deliver", "Deliver a newly built app image to servers"
+  desc "deliver", "Build app and push app image to registry then pull image on servers"
   def deliver
-    invoke :push
-    invoke :pull
+    with_lock do
+      push
+      pull
+    end
   end
 
-  desc "push", "Build locally and push app image to registry"
+  desc "push", "Build and push app image to registry"
   def push
-    cli = self
+    with_lock do
+      cli = self
 
-    run_locally do
-      begin
-        MRSK.with_verbosity(:debug) { execute *MRSK.builder.push }
-      rescue SSHKit::Command::Failed => e
-        if e.message =~ /(no builder)|(no such file or directory)/
-          error "Missing compatible builder, so creating a new one first"
+      run_locally do
+        begin
+          MRSK.with_verbosity(:debug) { execute *MRSK.builder.push }
+        rescue SSHKit::Command::Failed => e
+          if e.message =~ /(no builder)|(no such file or directory)/
+            error "Missing compatible builder, so creating a new one first"
 
-          if cli.create
-            MRSK.with_verbosity(:debug) { execute *MRSK.builder.push }
+            if cli.create
+              MRSK.with_verbosity(:debug) { execute *MRSK.builder.push }
+            end
+          else
+            raise
           end
-        else
-          raise
         end
       end
     end
   end
 
-  desc "pull", "Pull app image from the registry onto servers"
+  desc "pull", "Pull app image from registry onto servers"
   def pull
-    on(MRSK.hosts) do
-      execute *MRSK.auditor.record("build pull image #{MRSK.version}"), verbosity: :debug
-      execute *MRSK.builder.pull
+    with_lock do
+      on(MRSK.hosts) do
+        execute *MRSK.auditor.record("Pulled image with version #{MRSK.config.version}"), verbosity: :debug
+        execute *MRSK.builder.clean, raise_on_non_zero_exit: false
+        execute *MRSK.builder.pull
+      end
     end
   end
 
-  desc "create", "Create a local build setup"
+  desc "create", "Create a build setup"
   def create
-    run_locally do
-      begin
-        debug "Using builder: #{MRSK.builder.name}"
-        execute *MRSK.builder.create
-      rescue SSHKit::Command::Failed => e
-        if e.message =~ /stderr=(.*)/
-          error "Couldn't create remote builder: #{$1}"
-          false
-        else
-          raise
+    with_lock do
+      run_locally do
+        begin
+          debug "Using builder: #{MRSK.builder.name}"
+          execute *MRSK.builder.create
+        rescue SSHKit::Command::Failed => e
+          if e.message =~ /stderr=(.*)/
+            error "Couldn't create remote builder: #{$1}"
+            false
+          else
+            raise
+          end
         end
       end
     end
   end
 
-  desc "remove", "Remove local build setup"
+  desc "remove", "Remove build setup"
   def remove
-    run_locally do
-      debug "Using builder: #{MRSK.builder.name}"
-      execute *MRSK.builder.remove
+    with_lock do
+      run_locally do
+        debug "Using builder: #{MRSK.builder.name}"
+        execute *MRSK.builder.remove
+      end
     end
   end
 
-  desc "details", "Show the name of the configured builder"
+  desc "details", "Show build setup"
   def details
     run_locally do
       puts "Builder: #{MRSK.builder.name}"

lib/mrsk/cli/healthcheck.rb

@@ -0,0 +1,50 @@
+class Mrsk::Cli::Healthcheck < Mrsk::Cli::Base
+  MAX_ATTEMPTS = 7
+
+  class HealthcheckError < StandardError; end
+
+  default_command :perform
+
+  desc "perform", "Health check current app version"
+  def perform
+    on(MRSK.primary_host) do
+      begin
+        execute *MRSK.healthcheck.run
+
+        target = "Health check against #{MRSK.config.healthcheck["path"]}"
+        attempt = 1
+
+        begin
+          status = capture_with_info(*MRSK.healthcheck.curl)
+
+          if status == "200"
+            info "#{target} succeeded with 200 OK!"
+          else
+            raise HealthcheckError, "#{target} failed with status #{status}"
+          end
+        rescue SSHKit::Command::Failed
+          if attempt <= MAX_ATTEMPTS
+            info "#{target} failed to respond, retrying in #{attempt}s..."
+            sleep attempt
+            attempt += 1
+
+            retry
+          else
+            raise
+          end
+        end
+      rescue SSHKit::Command::Failed, HealthcheckError => e
+        error capture_with_info(*MRSK.healthcheck.logs)
+
+        if e.message =~ /curl/
+          raise SSHKit::Command::Failed, "#{target} failed to return 200 OK!"
+        else
+          raise
+        end
+      ensure
+        execute *MRSK.healthcheck.stop, raise_on_non_zero_exit: false
+        execute *MRSK.healthcheck.remove, raise_on_non_zero_exit: false
+      end
+    end
+  end
+end

lib/mrsk/cli/lock.rb

@@ -0,0 +1,37 @@
+class Mrsk::Cli::Lock < Mrsk::Cli::Base
+  desc "status", "Report lock status"
+  def status
+    handle_missing_lock do
+      on(MRSK.primary_host) { puts capture_with_info(*MRSK.lock.status) }
+    end
+  end
+
+  desc "acquire", "Acquire the deploy lock"
+  option :message, aliases: "-m", type: :string, desc: "A lock mesasge", required: true
+  def acquire
+    message = options[:message]
+    handle_missing_lock do
+      on(MRSK.primary_host) { execute *MRSK.lock.acquire(message, MRSK.config.version) }
+      say "Set the deploy lock"
+    end
+  end
+
+  desc "release", "Release the deploy lock"
+  def release
+    handle_missing_lock do
+      on(MRSK.primary_host) { execute *MRSK.lock.release }
+      say "Removed the deploy lock"
+    end
+  end
+
+  private
+    def handle_missing_lock
+      yield
+    rescue SSHKit::Runner::ExecuteError => e
+      if e.message =~ /No such file or directory/
+        say "There is no deploy lock"
+      else
+        raise
+      end
+    end
+end

lib/mrsk/cli/main.rb

@@ -1,59 +1,108 @@
 class Mrsk::Cli::Main < Mrsk::Cli::Base
-  desc "setup", "Setup all accessories and deploy the app to servers"
+  desc "setup", "Setup all accessories and deploy app to servers"
   def setup
-    print_runtime do
-      invoke "mrsk:cli:server:bootstrap"
-      invoke "mrsk:cli:accessory:boot", [ "all" ]
-      deploy
+    with_lock do
+      print_runtime do
+        invoke "mrsk:cli:server:bootstrap"
+        invoke "mrsk:cli:accessory:boot", [ "all" ]
+        deploy
+      end
     end
   end
 
-  desc "deploy", "Deploy the app to servers"
+  desc "deploy", "Deploy app to servers"
+  option :skip_push, aliases: "-P", type: :boolean, default: false, desc: "Skip image build and push"
   def deploy
-    print_runtime do
-      say "Ensure Docker is installed...", :magenta
-      invoke "mrsk:cli:server:bootstrap"
+    with_lock do
+      invoke_options = deploy_options
 
-      say "Log into image registry...", :magenta
-      invoke "mrsk:cli:registry:login"
+      runtime = print_runtime do
+        say "Ensure curl and Docker are installed...", :magenta
+        invoke "mrsk:cli:server:bootstrap", [], invoke_options
 
-      say "Build and push app image...", :magenta
-      invoke "mrsk:cli:build:deliver"
+        say "Log into image registry...", :magenta
+        invoke "mrsk:cli:registry:login", [], invoke_options
 
-      say "Ensure Traefik is running...", :magenta
-      invoke "mrsk:cli:traefik:boot"
+        if options[:skip_push]
+          say "Pull app image...", :magenta
+          invoke "mrsk:cli:build:pull", [], invoke_options
+        else
+          say "Build and push app image...", :magenta
+          invoke "mrsk:cli:build:deliver", [], invoke_options
+        end
 
-      invoke "mrsk:cli:app:boot"
+        say "Ensure Traefik is running...", :magenta
+        invoke "mrsk:cli:traefik:boot", [], invoke_options
 
-      say "Prune old containers and images...", :magenta
-      invoke "mrsk:cli:prune:all"
+        say "Ensure app can pass healthcheck...", :magenta
+        invoke "mrsk:cli:healthcheck:perform", [], invoke_options
+
+        invoke "mrsk:cli:app:boot", [], invoke_options
+
+        say "Prune old containers and images...", :magenta
+        invoke "mrsk:cli:prune:all", [], invoke_options
+      end
+
+      audit_broadcast "Deployed #{service_version} in #{runtime.round} seconds" unless options[:skip_broadcast]
     end
   end
 
-  desc "redeploy", "Deploy new version of the app to servers (without bootstrapping servers, starting Traefik, pruning, and registry login)"
+  desc "redeploy", "Deploy app to servers without bootstrapping servers, starting Traefik, pruning, and registry login"
+  option :skip_push, aliases: "-P", type: :boolean, default: false, desc: "Skip image build and push"
   def redeploy
-    print_runtime do
-      say "Build and push app image...", :magenta
-      invoke "mrsk:cli:build:deliver"
+    with_lock do
+      invoke_options = deploy_options
 
-      invoke "mrsk:cli:app:boot"
+      runtime = print_runtime do
+        if options[:skip_push]
+          say "Pull app image...", :magenta
+          invoke "mrsk:cli:build:pull", [], invoke_options
+        else
+          say "Build and push app image...", :magenta
+          invoke "mrsk:cli:build:deliver", [], invoke_options
+        end
+
+        say "Ensure app can pass healthcheck...", :magenta
+        invoke "mrsk:cli:healthcheck:perform", [], invoke_options
+
+        invoke "mrsk:cli:app:boot", [], invoke_options
+      end
+
+      audit_broadcast "Redeployed #{service_version} in #{runtime.round} seconds" unless options[:skip_broadcast]
     end
   end
 
-  desc "rollback [VERSION]", "Rollback the app to VERSION"
+  desc "rollback [VERSION]", "Rollback app to VERSION"
   def rollback(version)
-    MRSK.version = version
+    with_lock do
+      MRSK.config.version = version
 
-    cli = self
+      if container_name_available?(MRSK.config.service_with_version)
+        say "Start version #{version}, then wait #{MRSK.config.readiness_delay}s for app to boot before stopping the old version...", :magenta
 
-    cli.say "Stop current version, then start version #{version}...", :magenta
-    on(MRSK.hosts) do
-      execute *MRSK.app.stop, raise_on_non_zero_exit: false
-      execute *MRSK.app.start
+        cli = self
+        old_version = nil
+
+        on(MRSK.hosts) do |host|
+          old_version = capture_with_info(*MRSK.app.current_running_version).strip.presence
+
+          execute *MRSK.app.start
+
+          if old_version
+            sleep MRSK.config.readiness_delay
+
+            execute *MRSK.app.stop(version: old_version), raise_on_non_zero_exit: false
+          end
+        end
+
+        audit_broadcast "Rolled back #{service_version(Mrsk::Utils.abbreviate_version(old_version))} to #{service_version}" unless options[:skip_broadcast]
+      else
+        say "The app version '#{version}' is not available as a container (use 'mrsk app containers' for available versions)", :red
+      end
     end
   end
 
-  desc "details", "Display details about Traefik and app containers"
+  desc "details", "Show details about all containers"
   def details
     invoke "mrsk:cli:traefik:details"
     invoke "mrsk:cli:app:details"
@@ -67,7 +116,7 @@ class Mrsk::Cli::Main < Mrsk::Cli::Base
     end
   end
 
-  desc "config", "Show combined config"
+  desc "config", "Show combined config (including secrets!)"
   def config
     run_locally do
       puts MRSK.config.to_h.to_yaml
@@ -97,8 +146,10 @@ class Mrsk::Cli::Main < Mrsk::Cli::Base
         puts "Binstub already exists in bin/mrsk (remove first to create a new one)"
       else
         puts "Adding MRSK to Gemfile and bundle..."
-        `bundle add mrsk`
-        `bundle binstubs mrsk`
+        run_locally do
+          execute :bundle, :add, :mrsk
+          execute :bundle, :binstubs, :mrsk
+        end
         puts "Created binstub file in bin/mrsk"
       end
     end
@@ -107,42 +158,73 @@ class Mrsk::Cli::Main < Mrsk::Cli::Base
   desc "envify", "Create .env by evaluating .env.erb (or .env.staging.erb -> .env.staging when using -d staging)"
   def envify
     if destination = options[:destination]
-      File.write(".env.#{destination}", ERB.new(IO.read(Pathname.new(File.expand_path(".env.#{destination}.erb")))).result)
+      env_template_path = ".env.#{destination}.erb"
+      env_path          = ".env.#{destination}"
     else
-      File.write(".env", ERB.new(IO.read(Pathname.new(File.expand_path(".env.erb")))).result)
+      env_template_path = ".env.erb"
+      env_path          = ".env"
+    end
+
+    File.write(env_path, ERB.new(File.read(env_template_path)).result, perm: 0600)
+  end
+
+  desc "remove", "Remove Traefik, app, accessories, and registry session from servers"
+  option :confirmed, aliases: "-y", type: :boolean, default: false, desc: "Proceed without confirmation question"
+  def remove
+    with_lock do
+      if options[:confirmed] || ask("This will remove all containers and images. Are you sure?", limited_to: %w( y N ), default: "N") == "y"
+        invoke "mrsk:cli:traefik:remove", [], options.without(:confirmed)
+        invoke "mrsk:cli:app:remove", [], options.without(:confirmed)
+        invoke "mrsk:cli:accessory:remove", [ "all" ], options
+        invoke "mrsk:cli:registry:logout", [], options.without(:confirmed)
+      end
     end
   end
 
-  desc "remove", "Remove Traefik, app, and registry session from servers"
-  def remove
-    invoke "mrsk:cli:traefik:remove"
-    invoke "mrsk:cli:app:remove"
-    invoke "mrsk:cli:registry:logout"
-  end
-
-  desc "version", "Display the MRSK version"
+  desc "version", "Show MRSK version"
   def version
     puts Mrsk::VERSION
   end
 
-  desc "accessory", "Manage the accessories"
+  desc "accessory", "Manage accessories (db/redis/search)"
   subcommand "accessory", Mrsk::Cli::Accessory
 
-  desc "app", "Manage the application"
+  desc "app", "Manage application"
   subcommand "app", Mrsk::Cli::App
 
-  desc "build", "Build the application image"
+  desc "build", "Build application image"
   subcommand "build", Mrsk::Cli::Build
 
+  desc "healthcheck", "Healthcheck application"
+  subcommand "healthcheck", Mrsk::Cli::Healthcheck
+
   desc "prune", "Prune old application images and containers"
   subcommand "prune", Mrsk::Cli::Prune
 
-  desc "registry", "Login and out of the image registry"
+  desc "registry", "Login and -out of the image registry"
   subcommand "registry", Mrsk::Cli::Registry
 
-  desc "server", "Bootstrap servers with Docker"
+  desc "server", "Bootstrap servers with curl and Docker"
   subcommand "server", Mrsk::Cli::Server
 
-  desc "traefik", "Manage the Traefik load balancer"
+  desc "traefik", "Manage Traefik load balancer"
   subcommand "traefik", Mrsk::Cli::Traefik
+
+  desc "lock", "Manage the deploy lock"
+  subcommand "lock", Mrsk::Cli::Lock
+
+  private
+    def container_name_available?(container_name, host: MRSK.primary_host)
+      container_names = nil
+      on(host) { container_names = capture_with_info(*MRSK.app.list_container_names).split("\n") }
+      Array(container_names).include?(container_name)
+    end
+
+    def deploy_options
+      { "version" => MRSK.config.version }.merge(options.without("skip_push"))
+    end
+
+    def service_version(version = MRSK.config.abbreviated_version)
+      [ MRSK.config.service, version ].compact.join("@")
+    end
 end

lib/mrsk/cli/prune.rb

@@ -1,23 +1,29 @@
 class Mrsk::Cli::Prune < Mrsk::Cli::Base
   desc "all", "Prune unused images and stopped containers"
   def all
-    invoke :containers
-    invoke :images
-  end
-
-  desc "images", "Prune unused images older than 30 days"
-  def images
-    on(MRSK.hosts) do
-      execute *MRSK.auditor.record("prune images"), verbosity: :debug
-      execute *MRSK.prune.images
+    with_lock do
+      containers
+      images
     end
   end
 
-  desc "containers", "Prune stopped containers for the service older than 3 days"
+  desc "images", "Prune unused images older than 7 days"
+  def images
+    with_lock do
+      on(MRSK.hosts) do
+        execute *MRSK.auditor.record("Pruned images"), verbosity: :debug
+        execute *MRSK.prune.images
+      end
+    end
+  end
+
+  desc "containers", "Prune stopped containers older than 3 days"
   def containers
-    on(MRSK.hosts) do
-      execute *MRSK.auditor.record("prune containers"), verbosity: :debug
-      execute *MRSK.prune.containers
+    with_lock do
+      on(MRSK.hosts) do
+        execute *MRSK.auditor.record("Pruned containers"), verbosity: :debug
+        execute *MRSK.prune.containers
+      end
     end
   end
 end

lib/mrsk/cli/registry.rb

@@ -1,15 +1,17 @@
 class Mrsk::Cli::Registry < Mrsk::Cli::Base
-  desc "login", "Login to the registry locally and remotely"
+  desc "login", "Log in to registry locally and remotely"
   def login
     run_locally    { execute *MRSK.registry.login }
     on(MRSK.hosts) { execute *MRSK.registry.login }
+  # FIXME: This rescue needed?
   rescue ArgumentError => e
     puts e.message
   end
 
-  desc "logout", "Logout of the registry remotely"
+  desc "logout", "Log out of registry remotely"
   def logout
     on(MRSK.hosts) { execute *MRSK.registry.logout }
+  # FIXME: This rescue needed?
   rescue ArgumentError => e
     puts e.message
   end

lib/mrsk/cli/server.rb

@@ -1,6 +1,17 @@
 class Mrsk::Cli::Server < Mrsk::Cli::Base
-  desc "bootstrap", "Ensure Docker is installed on the servers"
+  desc "bootstrap", "Ensure curl and Docker are installed on servers"
   def bootstrap
-    on(MRSK.hosts + MRSK.accessory_hosts) { execute "which docker || (apt-get update -y && apt-get install docker.io -y)" }
+    with_lock do
+      on(MRSK.hosts + MRSK.accessory_hosts) do
+        dependencies_to_install = Array.new.tap do |dependencies|
+          dependencies << "curl" unless execute "which curl", raise_on_non_zero_exit: false
+          dependencies << "docker.io" unless execute "which docker", raise_on_non_zero_exit: false
+        end
+
+        if dependencies_to_install.any?
+          execute "apt-get update -y && apt-get install #{dependencies_to_install.join(" ")} -y"
+        end
+      end
+    end
   end
 end

lib/mrsk/cli/templates/deploy.yml

@@ -1,5 +1,4 @@
-# Name of your application. Used to uniquely configuring Traefik and app containers.
-# Your Dockerfile should set LABEL service=the-same-value to ensure image pruning works.
+# Name of your application. Used to uniquely configure containers.
 service: my-app
 
 # Name of the container image.
@@ -14,4 +13,66 @@ registry:
   # Specify the registry server, if you're not using Docker Hub
   # server: registry.digitalocean.com / ghcr.io / ...
   username: my-user
-  password: my-password-should-go-somewhere-safe
+
+  # Always use an access token rather than real password when possible.
+  password:
+    - MRSK_REGISTRY_PASSWORD
+
+# Inject ENV variables into containers (secrets come from .env).
+# env:
+#   clear:
+#     DB_HOST: 192.168.0.2
+#   secret:
+#     - RAILS_MASTER_KEY
+
+# Call a broadcast command on deploys.
+# audit_broadcast_cmd:
+#   bin/broadcast_to_bc
+
+# Use a different ssh user than root
+# ssh:
+#   user: app
+
+# Configure builder setup.
+# builder:
+#   args:
+#     RUBY_VERSION: 3.2.0
+#   secrets:
+#     - GITHUB_TOKEN
+#   remote:
+#     arch: amd64
+#     host: ssh://app@192.168.0.1
+
+# Use accessory services (secrets come from .env).
+# accessories:
+#   db:
+#     image: mysql:8.0
+#     host: 192.168.0.2
+#     port: 3306
+#     env:
+#       clear:
+#         MYSQL_ROOT_HOST: '%'
+#       secret:
+#         - MYSQL_ROOT_PASSWORD
+#     files:
+#       - config/mysql/production.cnf:/etc/mysql/my.cnf
+#       - db/production.sql.erb:/docker-entrypoint-initdb.d/setup.sql
+#     directories:
+#       - data:/var/lib/mysql
+#   redis:
+#     image: redis:7.0
+#     host: 192.168.0.2
+#     port: 6379
+#     directories:
+#       - data:/data
+
+# Configure custom arguments for Traefik
+# traefik:
+#   args:
+#     accesslog: true
+#     accesslog.format: json
+
+# Configure a custom healthcheck (default is /up on port 3000)
+# healthcheck:
+#   path: /healthz
+#   port: 4000

lib/mrsk/cli/traefik.rb

@@ -1,39 +1,49 @@
 class Mrsk::Cli::Traefik < Mrsk::Cli::Base
   desc "boot", "Boot Traefik on servers"
   def boot
-    on(MRSK.traefik_hosts) { execute *MRSK.traefik.run, raise_on_non_zero_exit: false }
+    with_lock do
+      on(MRSK.traefik_hosts) { execute *MRSK.traefik.run, raise_on_non_zero_exit: false }
+    end
   end
 
   desc "reboot", "Reboot Traefik on servers (stop container, remove container, start new container)"
   def reboot
-    invoke :stop
-    invoke :remove_container
-    invoke :boot
+    with_lock do
+      stop
+      remove_container
+      boot
+    end
   end
 
-  desc "start", "Start existing Traefik on servers"
+  desc "start", "Start existing Traefik container on servers"
   def start
-    on(MRSK.traefik_hosts) do
-      execute *MRSK.auditor.record("traefik start"), verbosity: :debug
-      execute *MRSK.traefik.start, raise_on_non_zero_exit: false
+    with_lock do
+      on(MRSK.traefik_hosts) do
+        execute *MRSK.auditor.record("Started traefik"), verbosity: :debug
+        execute *MRSK.traefik.start, raise_on_non_zero_exit: false
+      end
     end
   end
 
-  desc "stop", "Stop Traefik on servers"
+  desc "stop", "Stop existing Traefik container on servers"
   def stop
-    on(MRSK.traefik_hosts) do
-      execute *MRSK.auditor.record("traefik stop"), verbosity: :debug
-      execute *MRSK.traefik.stop, raise_on_non_zero_exit: false
+    with_lock do
+      on(MRSK.traefik_hosts) do
+        execute *MRSK.auditor.record("Stopped traefik"), verbosity: :debug
+        execute *MRSK.traefik.stop, raise_on_non_zero_exit: false
+      end
     end
   end
 
-  desc "restart", "Restart Traefik on servers"
+  desc "restart", "Restart existing Traefik container on servers"
   def restart
-    invoke :stop
-    invoke :start
+    with_lock do
+      stop
+      start
+    end
   end
 
-  desc "details", "Display details about Traefik containers from servers"
+  desc "details", "Show details about Traefik container from servers"
   def details
     on(MRSK.traefik_hosts) { |host| puts_by_host host, capture_with_info(*MRSK.traefik.info), type: "Traefik" }
   end
@@ -64,24 +74,30 @@ class Mrsk::Cli::Traefik < Mrsk::Cli::Base
 
   desc "remove", "Remove Traefik container and image from servers"
   def remove
-    invoke :stop
-    invoke :remove_container
-    invoke :remove_image
-  end
-
-  desc "remove_container", "Remove Traefik container from servers"
-  def remove_container
-    on(MRSK.traefik_hosts) do
-      execute *MRSK.auditor.record("traefik remove container"), verbosity: :debug
-      execute *MRSK.traefik.remove_container
+    with_lock do
+      stop
+      remove_container
+      remove_image
     end
   end
 
-  desc "remove_container", "Remove Traefik image from servers"
+  desc "remove_container", "Remove Traefik container from servers", hide: true
+  def remove_container
+    with_lock do
+      on(MRSK.traefik_hosts) do
+        execute *MRSK.auditor.record("Removed traefik container"), verbosity: :debug
+        execute *MRSK.traefik.remove_container
+      end
+    end
+  end
+
+  desc "remove_container", "Remove Traefik image from servers", hide: true
   def remove_image
-    on(MRSK.traefik_hosts) do
-      execute *MRSK.auditor.record("traefik remove image"), verbosity: :debug
-      execute *MRSK.traefik.remove_image
+    with_lock do
+      on(MRSK.traefik_hosts) do
+        execute *MRSK.auditor.record("Removed traefik image"), verbosity: :debug
+        execute *MRSK.traefik.remove_image
+      end
     end
   end
 end

lib/mrsk/commander.rb

@@ -1,35 +1,57 @@
 require "active_support/core_ext/enumerable"
+require "active_support/core_ext/module/delegation"
 
 class Mrsk::Commander
-  attr_accessor :config_file, :destination, :verbosity, :version
+  attr_accessor :verbosity, :lock_count
 
-  def initialize(config_file: nil, destination: nil, verbosity: :info)
-    @config_file, @destination, @verbosity = config_file, destination, verbosity
+  def initialize
+    self.verbosity = :info
+    self.lock_count = 0
   end
 
   def config
-    @config ||= \
-      Mrsk::Configuration
-        .create_from(config_file, destination: destination, version: cascading_version)
-        .tap { |config| configure_sshkit_with(config) }
+    @config ||= Mrsk::Configuration.create_from(**@config_kwargs).tap do |config|
+      @config_kwargs = nil
+      configure_sshkit_with(config)
+    end
   end
 
-  attr_accessor :specific_hosts
+  def configure(**kwargs)
+    @config, @config_kwargs = nil, kwargs
+  end
+
+  attr_reader :specific_roles, :specific_hosts
 
   def specific_primary!
     self.specific_hosts = [ config.primary_web_host ]
   end
 
   def specific_roles=(role_names)
-    self.specific_hosts = config.roles.select { |r| role_names.include?(r.name) }.flat_map(&:hosts) if role_names.present?
+    @specific_roles = config.roles.select { |r| role_names.include?(r.name) } if role_names.present?
+  end
+
+  def specific_hosts=(hosts)
+    @specific_hosts = config.all_hosts & hosts if hosts.present?
   end
 
   def primary_host
-    specific_hosts&.sole || config.primary_web_host
+    specific_hosts&.first || config.primary_web_host
+  end
+
+  def roles
+    (specific_roles || config.roles).select do |role|
+      ((specific_hosts || config.all_hosts) & role.hosts).any?
+    end
   end
 
   def hosts
-    specific_hosts || config.all_hosts
+    (specific_hosts || config.all_hosts).select do |host|
+      (specific_roles || config.roles).flat_map(&:hosts).include?(host)
+    end
+  end
+
+  def roles_on(host)
+    roles.select { |role| role.hosts.include?(host.to_s) }.map(&:name)
   end
 
   def traefik_hosts
@@ -37,7 +59,7 @@ class Mrsk::Commander
   end
 
   def accessory_hosts
-    specific_hosts || config.accessories.collect(&:host)
+    specific_hosts || config.accessories.flat_map(&:hosts)
   end
 
   def accessory_names
@@ -45,55 +67,55 @@ class Mrsk::Commander
   end
 
 
-  def app
-    @app ||= Mrsk::Commands::App.new(config)
-  end
-
-  def builder
-    @builder ||= Mrsk::Commands::Builder.new(config)
-  end
-
-  def traefik
-    @traefik ||= Mrsk::Commands::Traefik.new(config)
-  end
-
-  def registry
-    @registry ||= Mrsk::Commands::Registry.new(config)
-  end
-
-  def prune
-    @prune ||= Mrsk::Commands::Prune.new(config)
+  def app(role: nil)
+    Mrsk::Commands::App.new(config, role: role)
   end
 
   def accessory(name)
     Mrsk::Commands::Accessory.new(config, name: name)
   end
 
-  def auditor
-    @auditor ||= Mrsk::Commands::Auditor.new(config)
+  def auditor(role: nil)
+    Mrsk::Commands::Auditor.new(config, role: role)
   end
 
+  def builder
+    @builder ||= Mrsk::Commands::Builder.new(config)
+  end
+
+  def healthcheck
+    @healthcheck ||= Mrsk::Commands::Healthcheck.new(config)
+  end
+
+  def prune
+    @prune ||= Mrsk::Commands::Prune.new(config)
+  end
+
+  def registry
+    @registry ||= Mrsk::Commands::Registry.new(config)
+  end
+
+  def traefik
+    @traefik ||= Mrsk::Commands::Traefik.new(config)
+  end
+
+  def lock
+    @lock ||= Mrsk::Commands::Lock.new(config)
+  end
 
   def with_verbosity(level)
-    old_level = SSHKit.config.output_verbosity
+    old_level = self.verbosity
+
+    self.verbosity = level
     SSHKit.config.output_verbosity = level
+
     yield
   ensure
+    self.verbosity = old_level
     SSHKit.config.output_verbosity = old_level
   end
 
-  # Test-induced damage!
-  def reset
-    @config = @config_file = @destination = @version = nil
-    @app = @builder = @traefik = @registry = @prune = @auditor = nil
-    @verbosity = :info
-  end
-
   private
-    def cascading_version
-      version.presence || ENV["VERSION"] || `git rev-parse HEAD`.strip
-    end
-
     # Lazy setup of SSHKit
     def configure_sshkit_with(config)
       SSHKit::Backend::Netssh.configure { |ssh| ssh.ssh_options = config.ssh_options }

lib/mrsk/commands/accessory.rb

@@ -1,6 +1,7 @@
 class Mrsk::Commands::Accessory < Mrsk::Commands::Base
   attr_reader :accessory_config
-  delegate :service_name, :image, :host, :port, :files, :directories, :env_args, :volume_args, :label_args, to: :accessory_config
+  delegate :service_name, :image, :hosts, :port, :files, :directories, :cmd,
+           :publish_args, :env_args, :volume_args, :label_args, :option_args, to: :accessory_config
 
   def initialize(config, name:)
     super(config)
@@ -10,13 +11,16 @@ class Mrsk::Commands::Accessory < Mrsk::Commands::Base
   def run
     docker :run,
       "--name", service_name,
-      "-d",
+      "--detach",
       "--restart", "unless-stopped",
-      "-p", port,
+      *config.logging_args,
+      *publish_args,
       *env_args,
       *volume_args,
       *label_args,
-      image
+      *option_args,
+      image,
+      cmd
   end
 
   def start
@@ -34,14 +38,14 @@ class Mrsk::Commands::Accessory < Mrsk::Commands::Base
 
   def logs(since: nil, lines: nil, grep: nil)
     pipe \
-      docker(:logs, service_name, (" --since #{since}" if since), (" -n #{lines}" if lines), "-t", "2>&1"),
+      docker(:logs, service_name, (" --since #{since}" if since), (" --tail #{lines}" if lines), "--timestamps", "2>&1"),
       ("grep '#{grep}'" if grep)
   end
 
   def follow_logs(grep: nil)
     run_over_ssh \
       pipe \
-        docker(:logs, service_name, "-t", "-n", "10", "-f", "2>&1"),
+        docker(:logs, service_name, "--timestamps", "--tail", "10", "--follow", "2>&1"),
         (%(grep "#{grep}") if grep)
   end
 
@@ -72,7 +76,7 @@ class Mrsk::Commands::Accessory < Mrsk::Commands::Base
   end
 
   def run_over_ssh(command)
-    super command, host: host
+    super command, host: hosts.first
   end
 
 
@@ -95,11 +99,11 @@ class Mrsk::Commands::Accessory < Mrsk::Commands::Base
   end
 
   def remove_container
-    docker :container, :prune, "-f", *service_filter
+    docker :container, :prune, "--force", *service_filter
   end
 
   def remove_image
-    docker :image, :prune, "-a", "-f", *service_filter
+    docker :image, :rm, "--force", image
   end
 
   private

lib/mrsk/commands/app.rb

@@ -1,35 +1,47 @@
 class Mrsk::Commands::App < Mrsk::Commands::Base
-  def run(role: :web)
-    role = config.role(role)
+  attr_reader :role
+
+  def initialize(config, role: nil)
+    super(config)
+    @role = role
+  end
+
+  def run
+    role = config.role(self.role)
 
     docker :run,
-      "-d",
+      "--detach",
       "--restart unless-stopped",
-      "--name", service_with_version,
+      "--name", container_name,
+      "-e", "MRSK_CONTAINER_NAME=\"#{container_name}\"",
       *role.env_args,
+      *config.logging_args,
       *config.volume_args,
       *role.label_args,
+      *role.option_args,
       config.absolute_image,
       role.cmd
   end
 
   def start
-    docker :start, service_with_version
+    docker :start, container_name
   end
 
-  def stop
-    pipe current_container_id, xargs(docker(:stop))
+  def stop(version: nil)
+    pipe \
+      version ? container_id_for_version(version) : current_container_id,
+      xargs(config.stop_wait_time ? docker(:stop, "-t", config.stop_wait_time) : docker(:stop))
   end
 
   def info
-    docker :ps, *service_filter
+    docker :ps, *filter_args
   end
 
 
   def logs(since: nil, lines: nil, grep: nil)
     pipe \
       current_container_id,
-      "xargs docker logs#{" --since #{since}" if since}#{" -n #{lines}" if lines} 2>&1",
+      "xargs docker logs#{" --since #{since}" if since}#{" --tail #{lines}" if lines} 2>&1",
       ("grep '#{grep}'" if grep)
   end
 
@@ -37,7 +49,7 @@ class Mrsk::Commands::App < Mrsk::Commands::Base
     run_over_ssh \
       pipe(
         current_container_id,
-        "xargs docker logs -t -n 10 -f 2>&1",
+        "xargs docker logs --timestamps --tail 10 --follow 2>&1",
         (%(grep "#{grep}") if grep)
       ),
       host: host
@@ -47,7 +59,7 @@ class Mrsk::Commands::App < Mrsk::Commands::Base
   def execute_in_existing_container(*command, interactive: false)
     docker :exec,
       ("-it" if interactive),
-      config.service_with_version,
+      container_name,
       *command
   end
 
@@ -71,40 +83,41 @@ class Mrsk::Commands::App < Mrsk::Commands::Base
 
 
   def current_container_id
-    docker :ps, "-q", *service_filter
+    docker :ps, "--quiet", *filter_args
   end
 
-  def container_id_for(container_name:)
-    docker :container, :ls, "-a", "-f", "name=#{container_name}", "-q"
+  def container_id_for_version(version)
+    container_id_for(container_name: container_name(version))
   end
 
   def current_running_version
     # FIXME: Find more graceful way to extract the version from "app-version" than using sed and tail!
     pipe \
-      docker(:ps, "--filter", "label=service=#{config.service}", "--format", '"{{.Names}}"'),
+      docker(:ps, *filter_args, "--format", '"{{.Names}}"'),
       %(sed 's/-/\\n/g'),
       "tail -n 1"
   end
 
-  def most_recent_version_from_available_images
-    pipe \
-      docker(:image, :ls, "--format", '"{{.Tag}}"', config.repository),
-      "head -n 1"
+  def list_containers
+    docker :container, :ls, "--all", *filter_args
   end
 
-
-  def list_containers
-    docker :container, :ls, "-a", *service_filter
+  def list_container_names
+    [ *list_containers, "--format", "'{{ .Names }}'" ]
   end
 
   def remove_container(version:)
     pipe \
-      container_id_for(container_name: service_with_version(version)),
+      container_id_for(container_name: container_name(version)),
       xargs(docker(:container, :rm))
   end
 
+  def rename_container(version:, new_version:)
+    docker :rename, container_name(version), container_name(new_version)
+  end
+
   def remove_containers
-    docker :container, :prune, "-f", *service_filter
+    docker :container, :prune, "--force", *filter_args
   end
 
   def list_images
@@ -112,20 +125,23 @@ class Mrsk::Commands::App < Mrsk::Commands::Base
   end
 
   def remove_images
-    docker :image, :prune, "-a", "-f", *service_filter
+    docker :image, :prune, "--all", "--force", *filter_args
   end
 
 
   private
-    def service_with_version(version = nil)
-      if version
-        "#{config.service}-#{version}"
-      else
-        config.service_with_version
-      end
+    def container_name(version = nil)
+      [ config.service, role, config.destination, version || config.version ].compact.join("-")
     end
 
-    def service_filter
-      [ "--filter", "label=service=#{config.service}" ]
+    def filter_args
+      argumentize "--filter", filters
+    end
+
+    def filters
+      [ "label=service=#{config.service}" ].tap do |filters|
+        filters << "label=destination=#{config.destination}" if config.destination
+        filters << "label=role=#{role}" if role
+      end
     end
 end

lib/mrsk/commands/auditor.rb

@@ -1,34 +1,57 @@
 require "active_support/core_ext/time/conversions"
 
 class Mrsk::Commands::Auditor < Mrsk::Commands::Base
+  attr_reader :role
+
+  def initialize(config, role: nil)
+    super(config)
+    @role = role
+  end
+
+  # Runs remotely
   def record(line)
     append \
-      [ :echo, tagged_line(line) ],
+      [ :echo, tagged_record_line(line) ],
       audit_log_file
   end
 
+  # Runs locally
+  def broadcast(line)
+    if broadcast_cmd = config.audit_broadcast_cmd
+      [ broadcast_cmd, tagged_broadcast_line(line) ]
+    end
+  end
+
   def reveal
     [ :tail, "-n", 50, audit_log_file ]
   end
 
   private
     def audit_log_file
-      "mrsk-#{config.service}-audit.log"
+      [ "mrsk", config.service, config.destination, "audit.log" ].compact.join("-")
     end
 
-    def tagged_line(line)
-      "'#{tags} #{line}'"
+    def tagged_record_line(line)
+      tagged_line recorded_at_tag, performer_tag, role_tag, line
     end
 
-    def tags
-      "[#{timestamp}] [#{performer}]"
+    def tagged_broadcast_line(line)
+      tagged_line performer_tag, role_tag, line
     end
 
-    def performer
-      `whoami`.strip
+    def tagged_line(*tags_and_line)
+      "'#{tags_and_line.compact.join(" ")}'"
     end
 
-    def timestamp
-      Time.now.to_fs(:db)
+    def recorded_at_tag
+      "[#{Time.now.to_fs(:db)}]"
+    end
+
+    def performer_tag
+      "[#{`whoami`.strip}]"
+    end
+
+    def role_tag
+      "[#{role}]" if role
     end
 end

lib/mrsk/commands/base.rb

@@ -1,6 +1,6 @@
 module Mrsk::Commands
   class Base
-    delegate :redact, to: Mrsk::Utils
+    delegate :redact, :argumentize, to: Mrsk::Utils
 
     attr_accessor :config
 
@@ -15,6 +15,10 @@ module Mrsk::Commands
       end
     end
 
+    def container_id_for(container_name:)
+      docker :container, :ls, "--all", "--filter", "name=^#{container_name}$", "--quiet"
+    end
+
     private
       def combine(*commands, by: "&&")
         commands
@@ -35,6 +39,10 @@ module Mrsk::Commands
         combine *commands, by: ">>"
       end
 
+      def write(*commands)
+        combine *commands, by: ">"
+      end
+
       def xargs(command)
         [ :xargs, command ].flatten
       end

lib/mrsk/commands/builder.rb

@@ -1,5 +1,5 @@
 class Mrsk::Commands::Builder < Mrsk::Commands::Base
-  delegate :create, :remove, :push, :pull, :info, to: :target
+  delegate :create, :remove, :push, :clean, :pull, :info, to: :target
 
   def name
     target.class.to_s.remove("Mrsk::Commands::Builder::").underscore

lib/mrsk/commands/builder/base.rb

@@ -1,19 +1,44 @@
 class Mrsk::Commands::Builder::Base < Mrsk::Commands::Base
   delegate :argumentize, to: Mrsk::Utils
 
+  def clean
+    docker :image, :rm, "--force", config.absolute_image
+  end
+
   def pull
     docker :pull, config.absolute_image
+    docker :pull, config.latest_image
   end
 
-  def build_args
-    argumentize "--build-arg", args, redacted: true
+  def build_options
+    [ *build_tags, *build_labels, *build_args, *build_secrets, *build_dockerfile ]
   end
 
-  def build_secrets
-    argumentize "--secret", secrets.collect { |secret| [ "id", secret ] }
+  def build_context
+    context
   end
 
   private
+    def build_tags
+      [ "-t", config.absolute_image, "-t", config.latest_image ]
+    end
+
+    def build_labels
+      argumentize "--label", { service: config.service }
+    end
+
+    def build_args
+      argumentize "--build-arg", args, redacted: true
+    end
+
+    def build_secrets
+      argumentize "--secret", secrets.collect { |secret| [ "id", secret ] }
+    end
+
+    def build_dockerfile
+      argumentize "--file", dockerfile
+    end
+
     def args
       (config.builder && config.builder["args"]) || {}
     end
@@ -21,4 +46,12 @@ class Mrsk::Commands::Builder::Base < Mrsk::Commands::Base
     def secrets
       (config.builder && config.builder["secrets"]) || []
     end
+
+    def dockerfile
+      (config.builder && config.builder["dockerfile"]) || "Dockerfile"
+    end
+
+    def context
+      (config.builder && config.builder["context"]) || "."
+    end
 end

lib/mrsk/commands/builder/multiarch.rb

@@ -12,10 +12,8 @@ class Mrsk::Commands::Builder::Multiarch < Mrsk::Commands::Builder::Base
       "--push",
       "--platform", "linux/amd64,linux/arm64",
       "--builder", builder_name,
-      "-t", config.absolute_image,
-      *build_args,
-      *build_secrets,
-      "."
+      *build_options,
+      build_context
   end
 
   def info

lib/mrsk/commands/builder/native.rb

@@ -9,8 +9,9 @@ class Mrsk::Commands::Builder::Native < Mrsk::Commands::Builder::Base
 
   def push
     combine \
-      docker(:build, "-t", *build_args, *build_secrets, config.absolute_image, "."),
-      docker(:push, config.absolute_image)
+      docker(:build, *build_options, build_context),
+      docker(:push, config.absolute_image),
+      docker(:push, config.latest_image)
   end
 
   def info

lib/mrsk/commands/builder/native/remote.rb

@@ -16,10 +16,8 @@ class Mrsk::Commands::Builder::Native::Remote < Mrsk::Commands::Builder::Native
       "--push",
       "--platform", platform,
       "--builder", builder_name,
-      "-t", config.absolute_image,
-      *build_args,
-      *build_secrets,
-      "."
+      *build_options,
+      build_context
   end
 
   def info

lib/mrsk/commands/healthcheck.rb

@@ -0,0 +1,52 @@
+class Mrsk::Commands::Healthcheck < Mrsk::Commands::Base
+  EXPOSED_PORT = 3999
+
+  def run
+    web = config.role(:web)
+
+    docker :run,
+      "--detach",
+      "--name", container_name_with_version,
+      "--publish", "#{EXPOSED_PORT}:#{config.healthcheck["port"]}",
+      "--label", "service=#{container_name}",
+      "-e", "MRSK_CONTAINER_NAME=\"#{container_name}\"",
+      *web.env_args,
+      *config.volume_args,
+      *web.option_args,
+      config.absolute_image,
+      web.cmd
+  end
+
+  def curl
+    [ :curl, "--silent", "--output", "/dev/null", "--write-out", "'%{http_code}'", "--max-time", "2", health_url ]
+  end
+
+  def logs
+    pipe container_id, xargs(docker(:logs, "--tail", 50, "2>&1"))
+  end
+
+  def stop
+    pipe container_id, xargs(docker(:stop))
+  end
+
+  def remove
+    pipe container_id, xargs(docker(:container, :rm))
+  end
+
+  private
+    def container_name
+      [ "healthcheck", config.service, config.destination ].compact.join("-")
+    end
+
+    def container_name_with_version
+      "#{container_name}-#{config.version}"
+    end
+
+    def container_id
+      container_id_for(container_name: container_name_with_version)
+    end
+
+    def health_url
+      "http://localhost:#{EXPOSED_PORT}#{config.healthcheck["path"]}"
+    end
+end

lib/mrsk/commands/lock.rb

@@ -0,0 +1,63 @@
+require "active_support/duration"
+require "active_support/core_ext/numeric/time"
+
+class Mrsk::Commands::Lock < Mrsk::Commands::Base
+  def acquire(message, version)
+    combine \
+      [:mkdir, lock_dir],
+      write_lock_details(message, version)
+  end
+
+  def release
+    combine \
+      [:rm, lock_details_file],
+      [:rm, "-r", lock_dir]
+  end
+
+  def status
+    combine \
+      stat_lock_dir,
+      read_lock_details
+  end
+
+  private
+    def write_lock_details(message, version)
+      write \
+        [:echo, "\"#{Base64.encode64(lock_details(message, version))}\""],
+        lock_details_file
+    end
+
+    def read_lock_details
+      pipe \
+        [:cat, lock_details_file],
+        [:base64, "-d"]
+    end
+
+    def stat_lock_dir
+      write \
+        [:stat, lock_dir],
+        "/dev/null"
+    end
+
+    def lock_dir
+      :mrsk_lock
+    end
+
+    def lock_details_file
+      [lock_dir, :details].join("/")
+    end
+
+    def lock_details(message, version)
+      <<~DETAILS.strip
+        Locked by: #{locked_by} at #{Time.now.gmtime}
+        Version: #{version}
+        Message: #{message}
+      DETAILS
+    end
+
+    def locked_by
+      `git config user.name`.strip
+    rescue Errno::ENOENT
+      "Unknown"
+    end
+end

lib/mrsk/commands/prune.rb

@@ -2,15 +2,11 @@ require "active_support/duration"
 require "active_support/core_ext/numeric/time"
 
 class Mrsk::Commands::Prune < Mrsk::Commands::Base
-  PRUNE_IMAGES_AFTER     = 30.days.in_hours.to_i
-  PRUNE_CONTAINERS_AFTER =  3.days.in_hours.to_i
-
-  def images
-    docker :image, :prune, "-f", "--filter", "until=#{PRUNE_IMAGES_AFTER}h"
+  def images(until_hours: 7.days.in_hours.to_i)
+    docker :image, :prune, "--all", "--force", "--filter", "label=service=#{config.service}", "--filter", "until=#{until_hours}h"
   end
 
-  def containers
-    docker :image, :prune, "-f", "--filter", "until=#{PRUNE_IMAGES_AFTER}h"
-    docker :container, :prune, "-f", "--filter", "label=service=#{config.service}", "--filter", "'until=#{PRUNE_CONTAINERS_AFTER}h'"
+  def containers(until_hours: 3.days.in_hours.to_i)
+    docker :container, :prune, "--force", "--filter", "label=service=#{config.service}", "--filter", "until=#{until_hours}h"
   end
 end

lib/mrsk/commands/registry.rb

@@ -2,10 +2,19 @@ class Mrsk::Commands::Registry < Mrsk::Commands::Base
   delegate :registry, to: :config
 
   def login
-    docker :login, registry["server"], "-u", redact(registry["username"]), "-p", redact(registry["password"])
+    docker :login, registry["server"], "-u", redact(lookup("username")), "-p", redact(lookup("password"))
   end
 
   def logout
     docker :logout, registry["server"]
   end
+
+  private
+    def lookup(key)
+      if registry[key].is_a?(Array)
+        ENV.fetch(registry[key].first).dup
+      else
+        registry[key]
+      end
+    end
 end

lib/mrsk/commands/traefik.rb

@@ -1,14 +1,21 @@
 class Mrsk::Commands::Traefik < Mrsk::Commands::Base
+  delegate :optionize, to: Mrsk::Utils
+
+  IMAGE = "traefik:v2.9.9"
+  CONTAINER_PORT = 80
+
   def run
     docker :run, "--name traefik",
-      "-d",
-      "--restart unless-stopped",
-      "-p 80:80",
-      "-v /var/run/docker.sock:/var/run/docker.sock",
-      "traefik",
+      "--detach",
+      "--restart", "unless-stopped",
+      "--publish", port,
+      "--volume", "/var/run/docker.sock:/var/run/docker.sock",
+      *config.logging_args,
+      *docker_options_args,
+      IMAGE,
       "--providers.docker",
       "--log.level=DEBUG",
-      *cmd_args
+      *cmd_option_args
   end
 
   def start
@@ -20,32 +27,48 @@ class Mrsk::Commands::Traefik < Mrsk::Commands::Base
   end
 
   def info
-    docker :ps, "--filter", "name=traefik"
+    docker :ps, "--filter", "name=^traefik$"
   end
 
   def logs(since: nil, lines: nil, grep: nil)
     pipe \
-      docker(:logs, "traefik", (" --since #{since}" if since), (" -n #{lines}" if lines), "-t", "2>&1"),
+      docker(:logs, "traefik", (" --since #{since}" if since), (" --tail #{lines}" if lines), "--timestamps", "2>&1"),
       ("grep '#{grep}'" if grep)
   end
 
   def follow_logs(host:, grep: nil)
     run_over_ssh pipe(
-      docker(:logs, "traefik", "-t", "-n", "10", "-f", "2>&1"),
+      docker(:logs, "traefik", "--timestamps", "--tail", "10", "--follow", "2>&1"),
       (%(grep "#{grep}") if grep)
     ).join(" "), host: host
   end
 
   def remove_container
-    docker :container, :prune, "-f", "--filter", "label=org.opencontainers.image.title=Traefik"
+    docker :container, :prune, "--force", "--filter", "label=org.opencontainers.image.title=Traefik"
   end
 
   def remove_image
-    docker :image, :prune, "-a", "-f", "--filter", "label=org.opencontainers.image.title=Traefik"
+    docker :image, :prune, "--all", "--force", "--filter", "label=org.opencontainers.image.title=Traefik"
+  end
+
+  def port
+    "#{host_port}:#{CONTAINER_PORT}"
   end
 
   private
-    def cmd_args
-      (config.raw_config.dig(:traefik, "args") || { }).collect { |(key, value)| [ "--#{key}", value ] }.flatten
+    def docker_options_args
+      optionize(config.traefik["options"] || {})
+    end
+
+    def cmd_option_args
+      if args = config.traefik["args"]
+        optionize args, with: "="
+      else
+        []
+      end
+    end
+
+    def host_port
+      config.traefik["host_port"] || CONTAINER_PORT
     end
 end

lib/mrsk/configuration.rb

@@ -6,23 +6,24 @@ require "erb"
 require "net/ssh/proxy/jump"
 
 class Mrsk::Configuration
-  delegate :service, :image, :servers, :env, :labels, :registry, :builder, to: :raw_config, allow_nil: true
-  delegate :argumentize, :argumentize_env_with_secrets, to: Mrsk::Utils
+  delegate :service, :image, :servers, :env, :labels, :registry, :builder, :stop_wait_time, to: :raw_config, allow_nil: true
+  delegate :argumentize, :argumentize_env_with_secrets, :optionize, to: Mrsk::Utils
 
-  attr_accessor :version
+  attr_accessor :destination
   attr_accessor :raw_config
 
   class << self
-    def create_from(base_config_file, destination: nil, version: "missing")
-      new(load_config_file(base_config_file).tap do |config|
-        if destination
-          config.deep_merge! \
-            load_config_file destination_config_file(base_config_file, destination)
-        end
-      end, version: version)
+    def create_from(config_file:, destination: nil, version: nil)
+      raw_config = load_config_files(config_file, *destination_config_file(config_file, destination))
+
+      new raw_config, destination: destination, version: version
     end
 
     private
+      def load_config_files(*files)
+        files.inject({}) { |config, file| config.deep_merge! load_config_file(file) }
+      end
+
       def load_config_file(file)
         if file.exist?
           YAML.load(ERB.new(IO.read(file)).result).symbolize_keys
@@ -32,18 +33,31 @@ class Mrsk::Configuration
       end
 
       def destination_config_file(base_config_file, destination)
-        dir, basename = base_config_file.split
-        dir.join basename.to_s.remove(".yml") + ".#{destination}.yml"
+        base_config_file.sub_ext(".#{destination}.yml") if destination
       end
   end
 
-  def initialize(raw_config, version: "missing", validate: true)
+  def initialize(raw_config, destination: nil, version: nil, validate: true)
     @raw_config = ActiveSupport::InheritableOptions.new(raw_config)
-    @version = version
+    @destination = destination
+    @declared_version = version
     valid? if validate
   end
 
 
+  def version=(version)
+    @declared_version = version
+  end
+
+  def version
+    @declared_version.presence || ENV["VERSION"] || current_commit_hash
+  end
+
+  def abbreviated_version
+    Mrsk::Utils.abbreviate_version(version)
+  end
+
+
   def roles
     @roles ||= role_names.collect { |role_name| Role.new(role_name, config: self) }
   end
@@ -62,15 +76,15 @@ class Mrsk::Configuration
 
 
   def all_hosts
-    roles.flat_map(&:hosts)
+    roles.flat_map(&:hosts).uniq
   end
 
   def primary_web_host
-    role(:web).hosts.first
+    role(:web).primary_host
   end
 
   def traefik_hosts
-    roles.select(&:running_traefik?).flat_map(&:hosts)
+    roles.select(&:running_traefik?).flat_map(&:hosts).uniq
   end
 
 
@@ -82,6 +96,10 @@ class Mrsk::Configuration
     "#{repository}:#{version}"
   end
 
+  def latest_image
+    "#{repository}:latest"
+  end
+
   def service_with_version
     "#{service}-#{version}"
   end
@@ -103,6 +121,16 @@ class Mrsk::Configuration
     end
   end
 
+  def logging_args
+    if raw_config.logging.present?
+      optionize({ "log-driver" => raw_config.logging["driver"] }.compact) +
+        argumentize("--log-opt", raw_config.logging["options"])
+    else
+      argumentize("--log-opt", { "max-size" => "10m" })
+    end
+  end
+
+
   def ssh_user
     if raw_config.ssh.present?
       raw_config.ssh["user"] || "root"
@@ -123,6 +151,18 @@ class Mrsk::Configuration
   end
 
 
+  def audit_broadcast_cmd
+    raw_config.audit_broadcast_cmd
+  end
+
+  def healthcheck
+    { "path" => "/up", "port" => 3000 }.merge(raw_config.healthcheck || {})
+  end
+
+  def readiness_delay
+    raw_config.readiness_delay || 7
+  end
+
   def valid?
     ensure_required_keys_present && ensure_env_available
   end
@@ -141,10 +181,15 @@ class Mrsk::Configuration
       volume_args: volume_args,
       ssh_options: ssh_options,
       builder: raw_config.builder,
-      accessories: raw_config.accessories
+      accessories: raw_config.accessories,
+      logging: logging_args,
+      healthcheck: healthcheck
     }.compact
   end
 
+  def traefik
+    raw_config.traefik || {}
+  end
 
   private
     # Will raise ArgumentError if any required config keys are missing
@@ -161,6 +206,12 @@ class Mrsk::Configuration
         raise ArgumentError, "You must specify a password for the registry in config/deploy.yml (or set the ENV variable if that's used)"
       end
 
+      roles.each do |role|
+        if role.hosts.empty?
+          raise ArgumentError, "No servers specified for the #{role.name} role"
+        end
+      end
+
       true
     end
 
@@ -175,4 +226,13 @@ class Mrsk::Configuration
     def role_names
       raw_config.servers.is_a?(Array) ? [ "web" ] : raw_config.servers.keys.sort
     end
+
+    def current_commit_hash
+      @current_commit_hash ||=
+        if system("git rev-parse")
+          `git rev-parse HEAD`.strip
+        else
+          raise "Can't use commit hash as version, no git repository found in #{Dir.pwd}"
+        end
+    end
 end

lib/mrsk/configuration/accessory.rb

@@ -1,5 +1,5 @@
 class Mrsk::Configuration::Accessory
-  delegate :argumentize, :argumentize_env_with_secrets, to: Mrsk::Utils
+  delegate :argumentize, :argumentize_env_with_secrets, :optionize, to: Mrsk::Utils
 
   attr_accessor :name, :specifics
 
@@ -15,18 +15,24 @@ class Mrsk::Configuration::Accessory
     specifics["image"]
   end
 
-  def host
-    specifics["host"] || raise(ArgumentError, "Missing host for accessory")
+  def hosts
+    if (specifics.keys & ["host", "hosts", "roles"]).size != 1
+      raise ArgumentError, "Specify one of `host`, `hosts` or `roles` for accessory `#{name}`"
+    end
+
+    hosts_from_host || hosts_from_hosts || hosts_from_roles
   end
 
   def port
-    if specifics["port"].to_s.include?(":")
-      specifics["port"]
-    else
-      "#{specifics["port"]}:#{specifics["port"]}"
+    if port = specifics["port"]&.to_s
+      port.include?(":") ? port : "#{port}:#{port}"
     end
   end
 
+  def publish_args
+    argumentize "--publish", port if port
+  end
+
   def labels
     default_labels.merge(specifics["labels"] || {})
   end
@@ -65,6 +71,18 @@ class Mrsk::Configuration::Accessory
     argumentize "--volume", volumes
   end
 
+  def option_args
+    if args = specifics["options"]
+      optionize args
+    else
+      []
+    end
+  end
+
+  def cmd
+    specifics["cmd"]
+  end
+
   private
     attr_accessor :config
 
@@ -120,4 +138,32 @@ class Mrsk::Configuration::Accessory
     def service_data_directory
       "$PWD/#{service_name}"
     end
+
+    def hosts_from_host
+      if specifics.key?("host")
+        host = specifics["host"]
+        if host
+          [host]
+        else
+          raise ArgumentError, "Missing host for accessory `#{name}`"
+        end
+      end
+    end
+
+    def hosts_from_hosts
+      if specifics.key?("hosts")
+        hosts = specifics["hosts"]
+        if hosts.is_a?(Array)
+          hosts
+        else
+          raise ArgumentError, "Hosts should be an Array for accessory `#{name}`"
+        end
+      end
+    end
+
+    def hosts_from_roles
+      if specifics.key?("roles")
+        specifics["roles"].flat_map { |role| config.role(role).hosts }
+      end
+    end
 end

lib/mrsk/configuration/role.rb

@@ -1,5 +1,5 @@
 class Mrsk::Configuration::Role
-  delegate :argumentize, :argumentize_env_with_secrets, to: Mrsk::Utils
+  delegate :argumentize, :argumentize_env_with_secrets, :optionize, to: Mrsk::Utils
 
   attr_accessor :name
 
@@ -7,6 +7,10 @@ class Mrsk::Configuration::Role
    @name, @config = name.inquiry, config
   end
 
+  def primary_host
+    hosts.first
+  end
+
   def hosts
     @hosts ||= extract_hosts_from_config
   end
@@ -35,6 +39,14 @@ class Mrsk::Configuration::Role
     specializations["cmd"]
   end
 
+  def option_args
+    if args = specializations["options"]
+      optionize args
+    else
+      []
+    end
+  end
+
   def running_traefik?
     name.web? || specializations["traefik"]
   end
@@ -47,22 +59,27 @@ class Mrsk::Configuration::Role
         config.servers
       else
         servers = config.servers[name]
-        servers.is_a?(Array) ? servers : servers["hosts"]
+        servers.is_a?(Array) ? servers : Array(servers["hosts"])
       end
     end
 
     def default_labels
-      { "service" => config.service, "role" => name }
+      if config.destination
+        { "service" => config.service, "role" => name, "destination" => config.destination }
+      else
+        { "service" => config.service, "role" => name }
+      end
     end
 
     def traefik_labels
       if running_traefik?
         {
-          "traefik.http.routers.#{config.service}.rule" => "'PathPrefix(`/`)'",
-          "traefik.http.services.#{config.service}.loadbalancer.healthcheck.path" => "/up",
+          "traefik.http.routers.#{config.service}.rule" => "PathPrefix(`/`)",
+          "traefik.http.services.#{config.service}.loadbalancer.healthcheck.path" => config.healthcheck["path"],
           "traefik.http.services.#{config.service}.loadbalancer.healthcheck.interval" => "1s",
-          "traefik.http.middlewares.#{config.service}.retry.attempts" => "3",
-          "traefik.http.middlewares.#{config.service}.retry.initialinterval" => "500ms"
+          "traefik.http.middlewares.#{config.service}-retry.retry.attempts" => "5",
+          "traefik.http.middlewares.#{config.service}-retry.retry.initialinterval" => "500ms",
+          "traefik.http.routers.#{config.service}.middlewares" => "#{config.service}-retry@docker"
         }
       else
         {}

lib/mrsk/utils.rb

@@ -1,13 +1,14 @@
 module Mrsk::Utils
   extend self
 
-  # Return a list of shell arguments using the same named argument against the passed attributes (hash or array).
+  # Return a list of escaped shell arguments using the same named argument against the passed attributes (hash or array).
   def argumentize(argument, attributes, redacted: false)
-    Array(attributes).flat_map do |k, v|
-      if v.present?
-        [ argument, redacted ? redact("#{k}=#{v}") : "#{k}=#{v}" ]
+    Array(attributes).flat_map do |key, value|
+      if value.present?
+        escaped_pair = [ key, escape_shell_value(value) ].join("=")
+        [ argument, redacted ? redact(escaped_pair) : escaped_pair ]
       else
-        [ argument, k ]
+        [ argument, key ]
       end
     end
   end
@@ -22,8 +23,34 @@ module Mrsk::Utils
     end
   end
 
+  # Returns a list of shell-dashed option arguments. If the value is true, it's treated like a value-less option.
+  def optionize(args, with: nil)
+    options = if with
+      flatten_args(args).collect { |(key, value)| value == true ? "--#{key}" : "--#{key}#{with}#{escape_shell_value(value)}" }
+    else
+      flatten_args(args).collect { |(key, value)| [ "--#{key}", value == true ? nil : escape_shell_value(value) ] }
+    end
+
+    options.flatten.compact
+  end
+
+  # Flattens a one-to-many structure into an array of two-element arrays each containing a key-value pair
+  def flatten_args(args)
+    args.flat_map { |key, value| value.try(:map) { |entry| [key, entry] } || [ [ key, value ] ] }
+  end
+
   # Copied from SSHKit::Backend::Abstract#redact to be available inside Commands classes
   def redact(arg) # Used in execute_command to hide redact() args a user passes in
     arg.to_s.extend(SSHKit::Redaction) # to_s due to our inability to extend Integer, etc
   end
+
+  # Escape a value to make it safe for shell use.
+  def escape_shell_value(value)
+    value.to_s.dump.gsub(/`/, '\\\\`')
+  end
+
+  # Abbreviate a git revhash for concise display
+  def abbreviate_version(version)
+    version[0...7] if version
+  end
 end

lib/mrsk/version.rb

@@ -1,3 +1,3 @@
 module Mrsk
-  VERSION = "0.6.0"
+  VERSION = "0.10.0"
 end

mrsk.gemspec

@@ -6,7 +6,7 @@ Gem::Specification.new do |spec|
   spec.authors     = [ "David Heinemeier Hansson" ]
   spec.email       = "dhh@hey.com"
   spec.homepage    = "https://github.com/rails/mrsk"
-  spec.summary     = "Deploy Rails apps in containers to servers running Docker with zero downtime."
+  spec.summary     = "Deploy web apps in containers to servers running Docker with zero downtime."
   spec.license     = "MIT"
 
   spec.files = Dir["lib/**/*", "MIT-LICENSE", "README.md"]
@@ -17,4 +17,10 @@ Gem::Specification.new do |spec|
   spec.add_dependency "thor", "~> 1.2"
   spec.add_dependency "dotenv", "~> 2.8"
   spec.add_dependency "zeitwerk", "~> 2.5"
+  spec.add_dependency "ed25519", "~> 1.2"
+  spec.add_dependency "bcrypt_pbkdf", "~> 1.0"
+
+  spec.add_development_dependency "debug"
+  spec.add_development_dependency "mocha"
+  spec.add_development_dependency "railties"
 end

test/cli/accessory_test.rb

@@ -1,36 +1,140 @@
 require_relative "cli_test_case"
 
 class CliAccessoryTest < CliTestCase
+  test "boot" do
+    Mrsk::Cli::Accessory.any_instance.expects(:directories).with("mysql")
+    Mrsk::Cli::Accessory.any_instance.expects(:upload).with("mysql")
+
+    run_command("boot", "mysql").tap do |output|
+      assert_match /docker login.*on 1.1.1.3/, output
+      assert_match "docker run --name app-mysql --detach --restart unless-stopped --log-opt max-size=\"10m\" --publish 3306:3306 -e [REDACTED] -e MYSQL_ROOT_HOST=\"%\" --volume $PWD/app-mysql/etc/mysql/my.cnf:/etc/mysql/my.cnf --volume $PWD/app-mysql/data:/var/lib/mysql --label service=\"app-mysql\" mysql:5.7 on 1.1.1.3", output
+    end
+  end
+
+  test "boot all" do
+    Mrsk::Cli::Accessory.any_instance.expects(:directories).with("mysql")
+    Mrsk::Cli::Accessory.any_instance.expects(:upload).with("mysql")
+    Mrsk::Cli::Accessory.any_instance.expects(:directories).with("redis")
+    Mrsk::Cli::Accessory.any_instance.expects(:upload).with("redis")
+
+    run_command("boot", "all").tap do |output|
+      assert_match /docker login.*on 1.1.1.3/, output
+      assert_match /docker login.*on 1.1.1.1/, output
+      assert_match /docker login.*on 1.1.1.2/, output
+      assert_match "docker run --name app-mysql --detach --restart unless-stopped --log-opt max-size=\"10m\" --publish 3306:3306 -e [REDACTED] -e MYSQL_ROOT_HOST=\"%\" --volume $PWD/app-mysql/etc/mysql/my.cnf:/etc/mysql/my.cnf --volume $PWD/app-mysql/data:/var/lib/mysql --label service=\"app-mysql\" mysql:5.7 on 1.1.1.3", output
+      assert_match "docker run --name app-redis --detach --restart unless-stopped --log-opt max-size=\"10m\" --publish 6379:6379 --volume $PWD/app-redis/data:/data --label service=\"app-redis\" redis:latest on 1.1.1.1", output
+      assert_match "docker run --name app-redis --detach --restart unless-stopped --log-opt max-size=\"10m\" --publish 6379:6379 --volume $PWD/app-redis/data:/data --label service=\"app-redis\" redis:latest on 1.1.1.2", output
+    end
+  end
+
   test "upload" do
-    assert_match "test/fixtures/files/my.cnf app-mysql/etc/mysql/my.cnf", run_command("upload", "mysql")
+    run_command("upload", "mysql").tap do |output|
+      assert_match "mkdir -p app-mysql/etc/mysql", output
+      assert_match "test/fixtures/files/my.cnf app-mysql/etc/mysql/my.cnf", output
+      assert_match "chmod 755 app-mysql/etc/mysql/my.cnf", output
+    end
   end
 
   test "directories" do
     assert_match "mkdir -p $PWD/app-mysql/data", run_command("directories", "mysql")
   end
 
-  test "remove service direcotry" do
-    assert_match "rm -rf app-mysql", run_command("remove_service_directory", "mysql")
+  test "reboot" do
+    Mrsk::Cli::Accessory.any_instance.expects(:stop).with("mysql")
+    Mrsk::Cli::Accessory.any_instance.expects(:remove_container).with("mysql")
+    Mrsk::Cli::Accessory.any_instance.expects(:boot).with("mysql")
+
+    run_command("reboot", "mysql")
   end
 
-  test "boot" do
-    assert_match "Running docker run --name app-mysql -d --restart unless-stopped -p 3306:3306 -e [REDACTED] -e MYSQL_ROOT_HOST=% --volume $PWD/app-mysql/etc/mysql/my.cnf:/etc/mysql/my.cnf --volume $PWD/app-mysql/data:/var/lib/mysql --label service=app-mysql mysql:5.7 on 1.1.1.3", run_command("boot", "mysql")
+  test "start" do
+    assert_match "docker container start app-mysql", run_command("start", "mysql")
+  end
+
+  test "stop" do
+    assert_match "docker container stop app-mysql", run_command("stop", "mysql")
+  end
+
+  test "restart" do
+    Mrsk::Cli::Accessory.any_instance.expects(:stop).with("mysql")
+    Mrsk::Cli::Accessory.any_instance.expects(:start).with("mysql")
+
+    run_command("restart", "mysql")
+  end
+
+  test "details" do
+    assert_match "docker ps --filter label=service=app-mysql", run_command("details", "mysql")
+  end
+
+  test "details with all" do
+    run_command("details", "all").tap do |output|
+      assert_match "docker ps --filter label=service=app-mysql", output
+      assert_match "docker ps --filter label=service=app-redis", output
+    end
   end
 
   test "exec" do
     run_command("exec", "mysql", "mysql -v").tap do |output|
-      assert_match /Launching command from new container/, output
-      assert_match /mysql -v/, output
+      assert_match "Launching command from new container", output
+      assert_match "mysql -v", output
     end
   end
 
   test "exec with reuse" do
     run_command("exec", "mysql", "--reuse", "mysql -v").tap do |output|
-      assert_match /Launching command from existing container/, output
-      assert_match %r[docker exec app-mysql mysql -v], output
+      assert_match "Launching command from existing container", output
+      assert_match "docker exec app-mysql mysql -v", output
     end
   end
 
+  test "logs" do
+    SSHKit::Backend::Abstract.any_instance.stubs(:exec)
+      .with("ssh -t root@1.1.1.3 'docker logs app-mysql --timestamps --tail 10 2>&1'")
+
+    assert_match "docker logs app-mysql  --tail 100 --timestamps 2>&1", run_command("logs", "mysql")
+  end
+
+  test "logs with follow" do
+    SSHKit::Backend::Abstract.any_instance.stubs(:exec)
+      .with("ssh -t root@1.1.1.3 'docker logs app-mysql --timestamps --tail 10 --follow 2>&1'")
+
+    assert_match "docker logs app-mysql --timestamps --tail 10 --follow 2>&1", run_command("logs", "mysql", "--follow")
+  end
+
+  test "remove with confirmation" do
+    Mrsk::Cli::Accessory.any_instance.expects(:stop).with("mysql")
+    Mrsk::Cli::Accessory.any_instance.expects(:remove_container).with("mysql")
+    Mrsk::Cli::Accessory.any_instance.expects(:remove_image).with("mysql")
+    Mrsk::Cli::Accessory.any_instance.expects(:remove_service_directory).with("mysql")
+
+    run_command("remove", "mysql", "-y")
+  end
+
+  test "remove all with confirmation" do
+    Mrsk::Cli::Accessory.any_instance.expects(:stop).with("mysql")
+    Mrsk::Cli::Accessory.any_instance.expects(:remove_container).with("mysql")
+    Mrsk::Cli::Accessory.any_instance.expects(:remove_image).with("mysql")
+    Mrsk::Cli::Accessory.any_instance.expects(:remove_service_directory).with("mysql")
+    Mrsk::Cli::Accessory.any_instance.expects(:stop).with("redis")
+    Mrsk::Cli::Accessory.any_instance.expects(:remove_container).with("redis")
+    Mrsk::Cli::Accessory.any_instance.expects(:remove_image).with("redis")
+    Mrsk::Cli::Accessory.any_instance.expects(:remove_service_directory).with("redis")
+
+    run_command("remove", "all", "-y")
+  end
+
+  test "remove_container" do
+    assert_match "docker container prune --force --filter label=service=app-mysql", run_command("remove_container", "mysql")
+  end
+
+  test "remove_image" do
+    assert_match "docker image rm --force mysql", run_command("remove_image", "mysql")
+  end
+
+  test "remove_service_directory" do
+    assert_match "rm -rf app-mysql", run_command("remove_service_directory", "mysql")
+  end
+
   private
     def run_command(*command)
       stdouted { Mrsk::Cli::Accessory.start([*command, "-c", "test/fixtures/deploy_with_accessories.yml"]) }

test/cli/app_test.rb

@@ -2,22 +2,31 @@ require_relative "cli_test_case"
 
 class CliAppTest < CliTestCase
   test "boot" do
-    assert_match /Running docker run -d --restart unless-stopped/, run_command("boot")
-  end
-
-  test "boot will reboot if same version is already running" do
-    run_command("details") # Preheat MRSK const
-
-    # Prevent expected failures from outputting to terminal
-    Thread.report_on_exception = false
-
-    MRSK.app.stubs(:run).raises(SSHKit::Command::Failed.new("already in use")).then.returns([ :docker, :run ])
+    # Stub current version fetch
+    SSHKit::Backend::Abstract.any_instance.stubs(:capture).returns("123") # old version
 
     run_command("boot").tap do |output|
-      assert_match /Rebooting container with same version already deployed/, output # Can't start what's already running
-      assert_match /docker ps -q --filter label=service=app \| xargs docker stop/, output # Stop what's running
-      assert_match /docker container ls -a -f name=app-999 -q \| xargs docker container rm/, output # Remove old container
-      assert_match /docker run/, output # Start new container
+      assert_match "docker run --detach --restart unless-stopped", output
+      assert_match "docker container ls --all --filter name=^app-web-123$ --quiet | xargs docker stop", output
+    end
+  end
+
+  test "boot will rename if same version is already running" do
+    run_command("details") # Preheat MRSK const
+
+    SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
+      .with(:docker, :container, :ls, "--all", "--filter", "name=^app-web-latest$", "--quiet")
+      .returns("12345678") # running version
+
+    SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
+      .with(:docker, :ps, "--filter", "label=service=app", "--filter", "label=role=web", "--format", "\"{{.Names}}\"", "|", "sed 's/-/\\n/g'", "|", "tail -n 1")
+      .returns("123") # old version
+
+    run_command("boot").tap do |output|
+      assert_match /Renaming container .* to .* as already deployed on 1.1.1.1/, output # Rename
+      assert_match /docker rename .* .*/, output
+      assert_match "docker run --detach --restart unless-stopped", output
+      assert_match "docker container ls --all --filter name=^app-web-123$ --quiet | xargs docker stop", output
     end
   ensure
     Thread.report_on_exception = true
@@ -25,43 +34,102 @@ class CliAppTest < CliTestCase
 
   test "start" do
     run_command("start").tap do |output|
-      assert_match /docker start app-999/, output
+      assert_match "docker start app-web-999", output
     end
   end
 
   test "stop" do
     run_command("stop").tap do |output|
-      assert_match /docker ps -q --filter label=service=app \| xargs docker stop/, output
+      assert_match "docker ps --quiet --filter label=service=app --filter label=role=web | xargs docker stop", output
     end
   end
 
   test "details" do
     run_command("details").tap do |output|
-      assert_match /docker ps --filter label=service=app/, output
+      assert_match "docker ps --filter label=service=app --filter label=role=web", output
+    end
+  end
+
+  test "remove" do
+    run_command("remove").tap do |output|
+      assert_match /#{Regexp.escape("docker ps --quiet --filter label=service=app --filter label=role=web | xargs docker stop")}/, output
+      assert_match /#{Regexp.escape("docker container prune --force --filter label=service=app")}/, output
+      assert_match /#{Regexp.escape("docker image prune --all --force --filter label=service=app")}/, output
     end
   end
 
   test "remove_container" do
     run_command("remove_container", "1234567").tap do |output|
-      assert_match /docker container ls -a -f name=app-1234567 -q \| xargs docker container rm/, output
+      assert_match "docker container ls --all --filter name=^app-web-1234567$ --quiet | xargs docker container rm", output
+    end
+  end
+
+  test "remove_containers" do
+    run_command("remove_containers").tap do |output|
+      assert_match "docker container prune --force --filter label=service=app", output
+    end
+  end
+
+  test "remove_images" do
+    run_command("remove_images").tap do |output|
+      assert_match "docker image prune --all --force --filter label=service=app", output
     end
   end
 
   test "exec" do
     run_command("exec", "ruby -v").tap do |output|
-      assert_match /ruby -v/, output
+      assert_match "docker run --rm dhh/app:latest ruby -v", output
     end
   end
 
   test "exec with reuse" do
     run_command("exec", "--reuse", "ruby -v").tap do |output|
-      assert_match %r[docker ps --filter label=service=app --format \"{{.Names}}\" | sed 's/-/\\n/g' | tail -n 1], output # Get current version
-      assert_match %r[docker exec app-999 ruby -v], output
+      assert_match "docker ps --filter label=service=app --format \"{{.Names}}\" | sed 's/-/\\n/g' | tail -n 1", output # Get current version
+      assert_match "docker exec app-web-999 ruby -v", output
+    end
+  end
+
+  test "containers" do
+    run_command("containers").tap do |output|
+      assert_match "docker container ls --all --filter label=service=app", output
+    end
+  end
+
+  test "images" do
+    run_command("images").tap do |output|
+      assert_match "docker image ls dhh/app", output
+    end
+  end
+
+  test "logs" do
+    SSHKit::Backend::Abstract.any_instance.stubs(:exec)
+      .with("ssh -t root@1.1.1.1 'docker ps --quiet --filter label=service=app --filter label=role=web | xargs docker logs --timestamps --tail 10 2>&1'")
+
+    assert_match "docker ps --quiet --filter label=service=app --filter label=role=web | xargs docker logs --tail 100 2>&1", run_command("logs")
+  end
+
+  test "logs with follow" do
+    SSHKit::Backend::Abstract.any_instance.stubs(:exec)
+      .with("ssh -t root@1.1.1.1 'docker ps --quiet --filter label=service=app --filter label=role=web | xargs docker logs --timestamps --tail 10 --follow 2>&1'")
+
+    assert_match "docker ps --quiet --filter label=service=app --filter label=role=web | xargs docker logs --timestamps --tail 10 --follow 2>&1", run_command("logs", "--follow")
+  end
+
+  test "version" do
+    run_command("version").tap do |output|
+      assert_match "docker ps --filter label=service=app --format \"{{.Names}}\" | sed 's/-/\\n/g' | tail -n 1", output
+    end
+  end
+
+
+  test "version through main" do
+    stdouted { Mrsk::Cli::Main.start(["app", "version", "-c", "test/fixtures/deploy_with_accessories.yml", "--hosts", "1.1.1.1"]) }.tap do |output|
+      assert_match "docker ps --filter label=service=app --format \"{{.Names}}\" | sed 's/-/\\n/g' | tail -n 1", output
     end
   end
 
   private
     def run_command(*command)
-      stdouted { Mrsk::Cli::App.start([*command, "-c", "test/fixtures/deploy_with_accessories.yml"]) }
+      stdouted { Mrsk::Cli::App.start([*command, "-c", "test/fixtures/deploy_with_accessories.yml", "--hosts", "1.1.1.1"]) }
     end
 end

test/cli/build_test.rb

@@ -0,0 +1,82 @@
+require_relative "cli_test_case"
+
+class CliBuildTest < CliTestCase
+  test "deliver" do
+    Mrsk::Cli::Build.any_instance.expects(:push)
+    Mrsk::Cli::Build.any_instance.expects(:pull)
+
+    run_command("deliver")
+  end
+
+  test "push" do
+    run_command("push").tap do |output|
+      assert_match /docker buildx build --push --platform linux\/amd64,linux\/arm64 --builder mrsk-app-multiarch -t dhh\/app:999 -t dhh\/app:latest --label service="app" --file Dockerfile \. as .*@localhost/, output
+    end
+  end
+
+  test "push without builder" do
+    stub_locking
+    SSHKit::Backend::Abstract.any_instance.stubs(:execute)
+      .with { |arg| arg == :docker }
+      .raises(SSHKit::Command::Failed.new("no builder"))
+      .then
+      .returns(true)
+
+    run_command("push").tap do |output|
+      assert_match /Missing compatible builder, so creating a new one first/, output
+    end
+  end
+
+  test "pull" do
+    run_command("pull").tap do |output|
+      assert_match /docker image rm --force dhh\/app:999/, output
+      assert_match /docker pull dhh\/app:latest/, output
+    end
+  end
+
+  test "create" do
+    run_command("create").tap do |output|
+      assert_match /docker buildx create --use --name mrsk-app-multiarch/, output
+    end
+  end
+
+  test "create with error" do
+    stub_locking
+    SSHKit::Backend::Abstract.any_instance.stubs(:execute)
+      .with { |arg| arg == :docker }
+      .raises(SSHKit::Command::Failed.new("stderr=error"))
+
+    run_command("create").tap do |output|
+      assert_match /Couldn't create remote builder: error/, output
+    end
+  end
+
+  test "remove" do
+    run_command("remove").tap do |output|
+      assert_match /docker buildx rm mrsk-app-multiarch/, output
+    end
+  end
+
+  test "details" do
+    SSHKit::Backend::Abstract.any_instance.stubs(:capture)
+      .with(:docker, :context, :ls, "&&", :docker, :buildx, :ls)
+      .returns("docker builder info")
+
+    run_command("details").tap do |output|
+      assert_match /Builder: multiarch/, output
+      assert_match /docker builder info/, output
+    end
+  end
+
+  private
+    def run_command(*command)
+      stdouted { Mrsk::Cli::Build.start([*command, "-c", "test/fixtures/deploy_with_accessories.yml"]) }
+    end
+
+    def stub_locking
+      SSHKit::Backend::Abstract.any_instance.stubs(:execute)
+        .with { |arg1, arg2| arg1 == :mkdir && arg2 == :mrsk_lock }
+      SSHKit::Backend::Abstract.any_instance.stubs(:execute)
+        .with { |arg1, arg2| arg1 == :rm && arg2 == "mrsk_lock/details" }
+    end
+end

test/cli/cli_test_case.rb

@@ -8,13 +8,14 @@ class CliTestCase < ActiveSupport::TestCase
     ENV["VERSION"]             = "999"
     ENV["RAILS_MASTER_KEY"]    = "123"
     ENV["MYSQL_ROOT_PASSWORD"] = "secret123"
+    Object.send(:remove_const, :MRSK)
+    Object.const_set(:MRSK, Mrsk::Commander.new)
   end
 
   teardown do
     ENV.delete("RAILS_MASTER_KEY")
     ENV.delete("MYSQL_ROOT_PASSWORD")
     ENV.delete("VERSION")
-    MRSK.reset
   end
 
   private

test/cli/healthcheck_test.rb

@@ -0,0 +1,70 @@
+require_relative "cli_test_case"
+
+class CliHealthcheckTest < CliTestCase
+  test "perform" do
+    # Prevent expected failures from outputting to terminal
+    Thread.report_on_exception = false
+
+    SSHKit::Backend::Abstract.any_instance.stubs(:sleep) # No sleeping when retrying
+    SSHKit::Backend::Abstract.any_instance.stubs(:execute)
+      .with(:docker, :container, :ls, "--all", "--filter", "name=^healthcheck-app-999$", "--quiet", "|", :xargs, :docker, :stop, raise_on_non_zero_exit: false)
+    SSHKit::Backend::Abstract.any_instance.stubs(:execute)
+      .with(:docker, :run, "--detach", "--name", "healthcheck-app-999", "--publish", "3999:3000", "--label", "service=healthcheck-app", "-e", "MRSK_CONTAINER_NAME=\"healthcheck-app\"", "dhh/app:999")
+    SSHKit::Backend::Abstract.any_instance.stubs(:execute)
+      .with(:docker, :container, :ls, "--all", "--filter", "name=^healthcheck-app-999$", "--quiet", "|", :xargs, :docker, :container, :rm, raise_on_non_zero_exit: false)
+
+    # Fail twice to test retry logic
+    SSHKit::Backend::Abstract.any_instance.stubs(:capture_with_info)
+      .with(:curl, "--silent", "--output", "/dev/null", "--write-out", "'%{http_code}'", "--max-time", "2", "http://localhost:3999/up")
+      .raises(SSHKit::Command::Failed)
+      .then
+      .raises(SSHKit::Command::Failed)
+      .then
+      .returns("200")
+
+    run_command("perform").tap do |output|
+      assert_match "Health check against /up failed to respond, retrying in 1s...", output
+      assert_match "Health check against /up failed to respond, retrying in 2s...", output
+      assert_match "Health check against /up succeeded with 200 OK!", output
+    end
+  end
+
+  test "perform failing because of curl" do
+    # Prevent expected failures from outputting to terminal
+    Thread.report_on_exception = false
+
+    SSHKit::Backend::Abstract.any_instance.stubs(:execute) # No need to execute anything here
+    SSHKit::Backend::Abstract.any_instance.stubs(:capture_with_info)
+      .with(:curl, "--silent", "--output", "/dev/null", "--write-out", "'%{http_code}'", "--max-time", "2", "http://localhost:3999/up")
+      .returns("curl: command not found")
+    SSHKit::Backend::Abstract.any_instance.stubs(:capture_with_info)
+      .with(:docker, :container, :ls, "--all", "--filter", "name=^healthcheck-app-999$", "--quiet", "|", :xargs, :docker, :logs, "--tail", 50, "2>&1")
+
+    exception = assert_raises SSHKit::Runner::ExecuteError do
+      run_command("perform")
+    end
+    assert_match "Health check against /up failed to return 200 OK!", exception.message
+  end
+
+  test "perform failing for unknown reason" do
+    # Prevent expected failures from outputting to terminal
+    Thread.report_on_exception = false
+
+    SSHKit::Backend::Abstract.any_instance.stubs(:execute) # No need to execute anything here
+    SSHKit::Backend::Abstract.any_instance.stubs(:capture_with_info)
+      .with(:curl, "--silent", "--output", "/dev/null", "--write-out", "'%{http_code}'", "--max-time", "2", "http://localhost:3999/up")
+      .returns("500")
+    SSHKit::Backend::Abstract.any_instance.stubs(:capture_with_info)
+      .with(:docker, :container, :ls, "--all", "--filter", "name=^healthcheck-app-999$", "--quiet", "|", :xargs, :docker, :logs, "--tail", 50, "2>&1")
+
+    exception = assert_raises do
+      run_command("perform")
+    end
+    assert_match "Health check against /up failed with status 500", exception.message
+  end
+
+  private
+    def run_command(*command)
+      stdouted { Mrsk::Cli::Healthcheck.start([*command, "-c", "test/fixtures/deploy_with_accessories.yml"]) }
+    end
+end

test/cli/lock_test.rb

@@ -0,0 +1,20 @@
+require_relative "cli_test_case"
+
+class CliLockTest < CliTestCase
+  test "status" do
+    run_command("status") do |output|
+      assert_match "stat lock", output
+    end
+  end
+
+  test "release" do
+    run_command("release") do |output|
+      assert_match "rm -rf lock", output
+    end
+  end
+
+  private
+    def run_command(*command)
+      stdouted { Mrsk::Cli::Lock.start([*command, "-c", "test/fixtures/deploy_with_accessories.yml"]) }
+    end
+end

test/cli/main_test.rb

@@ -1,8 +1,259 @@
 require_relative "cli_test_case"
 
 class CliMainTest < CliTestCase
+  test "setup" do
+    Mrsk::Cli::Main.any_instance.expects(:invoke).with("mrsk:cli:server:bootstrap")
+    Mrsk::Cli::Main.any_instance.expects(:invoke).with("mrsk:cli:accessory:boot", [ "all" ])
+    Mrsk::Cli::Main.any_instance.expects(:deploy)
+
+    run_command("setup")
+  end
+
+  test "deploy" do
+    invoke_options = { "config_file" => "test/fixtures/deploy_simple.yml", "skip_broadcast" => false, "version" => "999" }
+
+    Mrsk::Cli::Main.any_instance.expects(:invoke).with("mrsk:cli:server:bootstrap", [], invoke_options)
+    Mrsk::Cli::Main.any_instance.expects(:invoke).with("mrsk:cli:registry:login", [], invoke_options)
+    Mrsk::Cli::Main.any_instance.expects(:invoke).with("mrsk:cli:build:deliver", [], invoke_options)
+    Mrsk::Cli::Main.any_instance.expects(:invoke).with("mrsk:cli:traefik:boot", [], invoke_options)
+    Mrsk::Cli::Main.any_instance.expects(:invoke).with("mrsk:cli:healthcheck:perform", [], invoke_options)
+    Mrsk::Cli::Main.any_instance.expects(:invoke).with("mrsk:cli:app:boot", [], invoke_options)
+    Mrsk::Cli::Main.any_instance.expects(:invoke).with("mrsk:cli:prune:all", [], invoke_options)
+
+    run_command("deploy").tap do |output|
+      assert_match /Ensure curl and Docker are installed/, output
+      assert_match /Log into image registry/, output
+      assert_match /Build and push app image/, output
+      assert_match /Ensure Traefik is running/, output
+      assert_match /Ensure app can pass healthcheck/, output
+      assert_match /Prune old containers and images/, output
+    end
+  end
+
+  test "deploy with skip_push" do
+    invoke_options = { "config_file" => "test/fixtures/deploy_simple.yml", "skip_broadcast" => false, "version" => "999" }
+
+    Mrsk::Cli::Main.any_instance.expects(:invoke).with("mrsk:cli:server:bootstrap", [], invoke_options)
+    Mrsk::Cli::Main.any_instance.expects(:invoke).with("mrsk:cli:registry:login", [], invoke_options)
+    Mrsk::Cli::Main.any_instance.expects(:invoke).with("mrsk:cli:build:pull", [], invoke_options)
+    Mrsk::Cli::Main.any_instance.expects(:invoke).with("mrsk:cli:traefik:boot", [], invoke_options)
+    Mrsk::Cli::Main.any_instance.expects(:invoke).with("mrsk:cli:healthcheck:perform", [], invoke_options)
+    Mrsk::Cli::Main.any_instance.expects(:invoke).with("mrsk:cli:app:boot", [], invoke_options)
+    Mrsk::Cli::Main.any_instance.expects(:invoke).with("mrsk:cli:prune:all", [], invoke_options)
+
+    run_command("deploy", "--skip_push").tap do |output|
+      assert_match /Acquiring the deploy lock/, output
+      assert_match /Ensure curl and Docker are installed/, output
+      assert_match /Log into image registry/, output
+      assert_match /Pull app image/, output
+      assert_match /Ensure Traefik is running/, output
+      assert_match /Ensure app can pass healthcheck/, output
+      assert_match /Prune old containers and images/, output
+      assert_match /Releasing the deploy lock/, output
+    end
+  end
+
+  test "redeploy" do
+    invoke_options = { "config_file" => "test/fixtures/deploy_simple.yml", "skip_broadcast" => false, "version" => "999" }
+
+    Mrsk::Cli::Main.any_instance.expects(:invoke).with("mrsk:cli:build:deliver", [], invoke_options)
+    Mrsk::Cli::Main.any_instance.expects(:invoke).with("mrsk:cli:healthcheck:perform", [], invoke_options)
+    Mrsk::Cli::Main.any_instance.expects(:invoke).with("mrsk:cli:app:boot", [], invoke_options)
+
+    run_command("redeploy").tap do |output|
+      assert_match /Build and push app image/, output
+      assert_match /Ensure app can pass healthcheck/, output
+    end
+  end
+
+  test "redeploy with skip_push" do
+    invoke_options = { "config_file" => "test/fixtures/deploy_simple.yml", "skip_broadcast" => false, "version" => "999" }
+
+    Mrsk::Cli::Main.any_instance.expects(:invoke).with("mrsk:cli:build:pull", [], invoke_options)
+    Mrsk::Cli::Main.any_instance.expects(:invoke).with("mrsk:cli:healthcheck:perform", [], invoke_options)
+    Mrsk::Cli::Main.any_instance.expects(:invoke).with("mrsk:cli:app:boot", [], invoke_options)
+
+    run_command("redeploy", "--skip_push").tap do |output|
+      assert_match /Pull app image/, output
+      assert_match /Ensure app can pass healthcheck/, output
+    end
+  end
+
+  test "rollback bad version" do
+    run_command("details") # Preheat MRSK const
+
+    run_command("rollback", "nonsense").tap do |output|
+      assert_match /docker container ls --all --filter label=service=app --format '{{ .Names }}'/, output
+      assert_match /The app version 'nonsense' is not available as a container/, output
+    end
+  end
+
+  test "rollback good version" do
+    Mrsk::Cli::Main.any_instance.stubs(:container_name_available?).returns(true)
+    SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info).with(:docker, :ps, "--filter", "label=service=app", "--format", "\"{{.Names}}\"", "|", "sed 's/-/\\n/g'", "|", "tail -n 1").returns("version-to-rollback\n").at_least_once
+
+    run_command("rollback", "123", config_file: "deploy_with_accessories").tap do |output|
+      assert_match "Start version 123", output
+      assert_match "docker start app-123", output
+      assert_match "docker container ls --all --filter name=^app-version-to-rollback$ --quiet | xargs docker stop", output, "Should stop the container that was previously running"
+    end
+  end
+
+  test "rollback without old version" do
+    Mrsk::Cli::Main.any_instance.stubs(:container_name_available?).returns(true)
+    SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info).with(:docker, :ps, "--filter", "label=service=app", "--format", "\"{{.Names}}\"", "|", "sed 's/-/\\n/g'", "|", "tail -n 1").returns("").at_least_once
+
+    run_command("rollback", "123").tap do |output|
+      assert_match "Start version 123", output
+      assert_match "docker start app-123", output
+      assert_no_match "docker stop", output
+    end
+  end
+
+  test "details" do
+    Mrsk::Cli::Main.any_instance.expects(:invoke).with("mrsk:cli:traefik:details")
+    Mrsk::Cli::Main.any_instance.expects(:invoke).with("mrsk:cli:app:details")
+    Mrsk::Cli::Main.any_instance.expects(:invoke).with("mrsk:cli:accessory:details", [ "all" ])
+
+    run_command("details")
+  end
+
+  test "audit" do
+    run_command("audit").tap do |output|
+      assert_match /tail -n 50 mrsk-app-audit.log on 1.1.1.1/, output
+      assert_match /App Host: 1.1.1.1/, output
+    end
+  end
+
+  test "config" do
+    run_command("config", config_file: "deploy_simple").tap do |output|
+      config = YAML.load(output)
+
+      assert_equal ["web"], config[:roles]
+      assert_equal ["1.1.1.1", "1.1.1.2"], config[:hosts]
+      assert_equal "999", config[:version]
+      assert_equal "dhh/app", config[:repository]
+      assert_equal "dhh/app:999", config[:absolute_image]
+      assert_equal "app-999", config[:service_with_version]
+    end
+  end
+
+  test "config with roles" do
+    run_command("config", config_file: "deploy_with_roles").tap do |output|
+      config = YAML.load(output)
+
+      assert_equal ["web", "workers"], config[:roles]
+      assert_equal ["1.1.1.1", "1.1.1.2", "1.1.1.3", "1.1.1.4"], config[:hosts]
+      assert_equal "999", config[:version]
+      assert_equal "registry.digitalocean.com/dhh/app", config[:repository]
+      assert_equal "registry.digitalocean.com/dhh/app:999", config[:absolute_image]
+      assert_equal "app-999", config[:service_with_version]
+    end
+  end
+
+  test "config with destination" do
+    run_command("config", "-d", "world", config_file: "deploy_for_dest").tap do |output|
+      config = YAML.load(output)
+
+      assert_equal ["web"], config[:roles]
+      assert_equal ["1.1.1.1", "1.1.1.2"], config[:hosts]
+      assert_equal "999", config[:version]
+      assert_equal "registry.digitalocean.com/dhh/app", config[:repository]
+      assert_equal "registry.digitalocean.com/dhh/app:999", config[:absolute_image]
+      assert_equal "app-999", config[:service_with_version]
+    end
+  end
+
+  test "init" do
+    Pathname.any_instance.expects(:exist?).returns(false).twice
+    FileUtils.stubs(:mkdir_p)
+    FileUtils.stubs(:cp_r)
+
+    run_command("init").tap do |output|
+      assert_match /Created configuration file in config\/deploy.yml/, output
+      assert_match /Created \.env file/, output
+    end
+  end
+
+  test "init with existing config" do
+    Pathname.any_instance.expects(:exist?).returns(true).twice
+
+    run_command("init").tap do |output|
+      assert_match /Config file already exists in config\/deploy.yml \(remove first to create a new one\)/, output
+    end
+  end
+
+  test "init with bundle option" do
+    Pathname.any_instance.expects(:exist?).returns(false).times(3)
+    FileUtils.stubs(:mkdir_p)
+    FileUtils.stubs(:cp_r)
+
+    run_command("init", "--bundle").tap do |output|
+      assert_match /Created configuration file in config\/deploy.yml/, output
+      assert_match /Created \.env file/, output
+      assert_match /Adding MRSK to Gemfile and bundle/, output
+      assert_match /bundle add mrsk/, output
+      assert_match /bundle binstubs mrsk/, output
+      assert_match /Created binstub file in bin\/mrsk/, output
+    end
+  end
+
+  test "init with bundle option and existing binstub" do
+    Pathname.any_instance.expects(:exist?).returns(true).times(3)
+    FileUtils.stubs(:mkdir_p)
+    FileUtils.stubs(:cp_r)
+
+    run_command("init", "--bundle").tap do |output|
+      assert_match /Config file already exists in config\/deploy.yml \(remove first to create a new one\)/, output
+      assert_match /Binstub already exists in bin\/mrsk \(remove first to create a new one\)/, output
+    end
+  end
+
+  test "envify" do
+    File.expects(:read).with(".env.erb").returns("HELLO=<%= 'world' %>")
+    File.expects(:write).with(".env", "HELLO=world", perm: 0600)
+
+    run_command("envify")
+  end
+
+  test "envify with destination" do
+    File.expects(:read).with(".env.staging.erb").returns("HELLO=<%= 'world' %>")
+    File.expects(:write).with(".env.staging", "HELLO=world", perm: 0600)
+
+    run_command("envify", "-d", "staging")
+  end
+
+  test "remove with confirmation" do
+    run_command("remove", "-y", config_file: "deploy_with_accessories").tap do |output|
+      assert_match /docker container stop traefik/, output
+      assert_match /docker container prune --force --filter label=org.opencontainers.image.title=Traefik/, output
+      assert_match /docker image prune --all --force --filter label=org.opencontainers.image.title=Traefik/, output
+
+      assert_match /docker ps --quiet --filter label=service=app | xargs docker stop/, output
+      assert_match /docker container prune --force --filter label=service=app/, output
+      assert_match /docker image prune --all --force --filter label=service=app/, output
+
+      assert_match /docker container stop app-mysql/, output
+      assert_match /docker container prune --force --filter label=service=app-mysql/, output
+      assert_match /docker image rm --force mysql/, output
+      assert_match /rm -rf app-mysql/, output
+
+      assert_match /docker container stop app-redis/, output
+      assert_match /docker container prune --force --filter label=service=app-redis/, output
+      assert_match /docker image rm --force redis/, output
+      assert_match /rm -rf app-redis/, output
+
+      assert_match /docker logout/, output
+    end
+  end
+
   test "version" do
     version = stdouted { Mrsk::Cli::Main.new.version }
     assert_equal Mrsk::VERSION, version
   end
+
+  private
+    def run_command(*command, config_file: "deploy_simple")
+      stdouted { Mrsk::Cli::Main.start([*command, "-c", "test/fixtures/#{config_file}.yml"]) }
+    end
 end

test/cli/prune_test.rb

@@ -0,0 +1,27 @@
+require_relative "cli_test_case"
+
+class CliPruneTest < CliTestCase
+  test "all" do
+    Mrsk::Cli::Prune.any_instance.expects(:containers)
+    Mrsk::Cli::Prune.any_instance.expects(:images)
+
+    run_command("all")
+  end
+
+  test "images" do
+    run_command("images").tap do |output|
+      assert_match /docker image prune --all --force --filter label=service=app --filter until=168h on 1.1.1.\d/, output
+    end
+  end
+
+  test "containers" do
+    run_command("containers").tap do |output|
+      assert_match /docker container prune --force --filter label=service=app --filter until=72h on 1.1.1.\d/, output
+    end
+  end
+
+  private
+    def run_command(*command)
+      stdouted { Mrsk::Cli::Prune.start([*command, "-c", "test/fixtures/deploy_with_accessories.yml"]) }
+    end
+end

test/cli/registry_test.rb

@@ -0,0 +1,21 @@
+require_relative "cli_test_case"
+
+class CliRegistryTest < CliTestCase
+  test "login" do
+    run_command("login").tap do |output|
+      assert_match /docker login -u \[REDACTED\] -p \[REDACTED\] as .*@localhost/, output
+      assert_match /docker login -u \[REDACTED\] -p \[REDACTED\] on 1.1.1.\d/, output
+    end
+  end
+
+  test "logout" do
+    run_command("logout").tap do |output|
+      assert_match /docker logout on 1.1.1.\d/, output
+    end
+  end
+
+  private
+    def run_command(*command)
+      stdouted { Mrsk::Cli::Registry.start([*command, "-c", "test/fixtures/deploy_with_accessories.yml"]) }
+    end
+end

test/cli/server_test.rb

@@ -0,0 +1,16 @@
+require_relative "cli_test_case"
+
+class CliServerTest < CliTestCase
+  test "bootstrap" do
+    run_command("bootstrap").tap do |output|
+      assert_match /which curl/, output
+      assert_match /which docker/, output
+      assert_match /apt-get update -y && apt-get install curl docker.io -y/, output
+    end
+  end
+
+  private
+    def run_command(*command)
+      stdouted { Mrsk::Cli::Server.start([*command, "-c", "test/fixtures/deploy_with_accessories.yml"]) }
+    end
+end

test/cli/traefik_test.rb

@@ -0,0 +1,85 @@
+require_relative "cli_test_case"
+
+class CliTraefikTest < CliTestCase
+  test "boot" do
+    run_command("boot").tap do |output|
+      assert_match "docker run --name traefik --detach --restart unless-stopped --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --log-opt max-size=\"10m\" traefik:v2.9.9 --providers.docker --log.level=DEBUG", output
+    end
+  end
+
+  test "reboot" do
+    Mrsk::Cli::Traefik.any_instance.expects(:stop)
+    Mrsk::Cli::Traefik.any_instance.expects(:remove_container)
+    Mrsk::Cli::Traefik.any_instance.expects(:boot)
+
+    run_command("reboot")
+  end
+
+  test "start" do
+    run_command("start").tap do |output|
+      assert_match "docker container start traefik", output
+    end
+  end
+
+  test "stop" do
+    run_command("stop").tap do |output|
+      assert_match "docker container stop traefik", output
+    end
+  end
+
+  test "restart" do
+    Mrsk::Cli::Traefik.any_instance.expects(:stop)
+    Mrsk::Cli::Traefik.any_instance.expects(:start)
+
+    run_command("restart")
+  end
+
+  test "details" do
+    run_command("details").tap do |output|
+      assert_match "docker ps --filter name=^traefik$", output
+    end
+  end
+
+  test "logs" do
+    SSHKit::Backend::Abstract.any_instance.stubs(:capture)
+      .with(:docker, :logs, "traefik", " --tail 100", "--timestamps", "2>&1")
+      .returns("Log entry")
+
+    run_command("logs").tap do |output|
+      assert_match "Traefik Host: 1.1.1.1", output
+      assert_match "Log entry", output
+    end
+  end
+
+  test "logs with follow" do
+    SSHKit::Backend::Abstract.any_instance.stubs(:exec)
+      .with("ssh -t root@1.1.1.1 'docker logs traefik --timestamps --tail 10 --follow 2>&1'")
+
+    assert_match "docker logs traefik --timestamps --tail 10 --follow", run_command("logs", "--follow")
+  end
+
+  test "remove" do
+    Mrsk::Cli::Traefik.any_instance.expects(:stop)
+    Mrsk::Cli::Traefik.any_instance.expects(:remove_container)
+    Mrsk::Cli::Traefik.any_instance.expects(:remove_image)
+
+    run_command("remove")
+  end
+
+  test "remove_container" do
+    run_command("remove_container").tap do |output|
+      assert_match "docker container prune --force --filter label=org.opencontainers.image.title=Traefik", output
+    end
+  end
+
+  test "remove_image" do
+    run_command("remove_image").tap do |output|
+      assert_match "docker image prune --all --force --filter label=org.opencontainers.image.title=Traefik", output
+    end
+  end
+
+  private
+    def run_command(*command)
+      stdouted { Mrsk::Cli::Traefik.start([*command, "-c", "test/fixtures/deploy_with_accessories.yml"]) }
+    end
+end

test/commander_test.rb

@@ -2,7 +2,9 @@ require "test_helper"
 
 class CommanderTest < ActiveSupport::TestCase
   setup do
-    @mrsk = Mrsk::Commander.new config_file: Pathname.new(File.expand_path("fixtures/deploy_with_roles.yml", __dir__))
+    @mrsk = Mrsk::Commander.new.tap do |mrsk|
+      mrsk.configure config_file: Pathname.new(File.expand_path("fixtures/deploy_with_roles.yml", __dir__))
+    end
   end
 
   test "lazy configuration" do
@@ -12,18 +14,29 @@ class CommanderTest < ActiveSupport::TestCase
   test "overwriting hosts" do
     assert_equal [ "1.1.1.1", "1.1.1.2", "1.1.1.3", "1.1.1.4" ], @mrsk.hosts
 
-    @mrsk.specific_hosts = [ "1.2.3.4", "1.2.3.5" ]
-    assert_equal [ "1.2.3.4", "1.2.3.5" ], @mrsk.hosts
+    @mrsk.specific_hosts = [ "1.1.1.1", "1.1.1.2" ]
+    assert_equal [ "1.1.1.1", "1.1.1.2" ], @mrsk.hosts
   end
 
-  test "overwriting hosts with roles" do
+  test "filtering hosts by filtering roles" do
     assert_equal [ "1.1.1.1", "1.1.1.2", "1.1.1.3", "1.1.1.4" ], @mrsk.hosts
 
-    @mrsk.specific_roles = [ "workers", "web" ]
-    assert_equal [ "1.1.1.1", "1.1.1.2", "1.1.1.3", "1.1.1.4" ], @mrsk.hosts
+    @mrsk.specific_roles = [ "web" ]
+    assert_equal [ "1.1.1.1", "1.1.1.2" ], @mrsk.hosts
+  end
+
+  test "filtering roles" do
+    assert_equal [ "web", "workers" ], @mrsk.roles.map(&:name)
 
     @mrsk.specific_roles = [ "workers" ]
-    assert_equal [ "1.1.1.3", "1.1.1.4" ], @mrsk.hosts
+    assert_equal [ "workers" ], @mrsk.roles.map(&:name)
+  end
+
+  test "filtering roles by filtering hosts" do
+    assert_equal [ "web", "workers" ], @mrsk.roles.map(&:name)
+
+    @mrsk.specific_hosts = [ "1.1.1.3" ]
+    assert_equal [ "workers" ], @mrsk.roles.map(&:name)
   end
 
   test "overwriting hosts with primary" do
@@ -32,4 +45,14 @@ class CommanderTest < ActiveSupport::TestCase
     @mrsk.specific_primary!
     assert_equal [ "1.1.1.1" ], @mrsk.hosts
   end
+
+  test "primary_host with specific hosts via role" do
+    @mrsk.specific_roles = "web"
+    assert_equal "1.1.1.1", @mrsk.primary_host
+  end
+
+  test "roles_on" do
+    assert_equal [ "web" ], @mrsk.roles_on("1.1.1.1")
+    assert_equal [ "workers" ], @mrsk.roles_on("1.1.1.3")
+  end
 end

test/commands/accessory_test.rb

@@ -3,11 +3,11 @@ require "test_helper"
 class CommandsAccessoryTest < ActiveSupport::TestCase
   setup do
     @config = {
-      service: "app", image: "dhh/app", registry: { "username" => "dhh", "password" => "secret" },
+      service: "app", image: "dhh/app", registry: { "server" => "private.registry", "username" => "dhh", "password" => "secret" },
       servers: [ "1.1.1.1" ],
       accessories: {
         "mysql" => {
-          "image" => "mysql:8.0",
+          "image" => "private.registry/mysql:8.0",
           "host" => "1.1.1.5",
           "port" => "3306",
           "env" => {
@@ -32,14 +32,14 @@ class CommandsAccessoryTest < ActiveSupport::TestCase
           "volumes" => [
             "/var/lib/redis:/data"
           ]
+        },
+        "busybox" => {
+          "image" => "busybox:latest",
+          "host" => "1.1.1.7"
         }
       }
     }
 
-    @config = Mrsk::Configuration.new(@config)
-    @mysql  = Mrsk::Commands::Accessory.new(@config, name: :mysql)
-    @redis  = Mrsk::Commands::Accessory.new(@config, name: :redis)
-
     ENV["MYSQL_ROOT_PASSWORD"] = "secret123"
   end
 
@@ -49,67 +49,103 @@ class CommandsAccessoryTest < ActiveSupport::TestCase
 
   test "run" do
     assert_equal \
-      [:docker, :run, "--name", "app-mysql", "-d", "--restart", "unless-stopped", "-p", "3306:3306", "-e", "MYSQL_ROOT_PASSWORD=secret123", "-e", "MYSQL_ROOT_HOST=%", "--label", "service=app-mysql", "mysql:8.0"], @mysql.run
+      "docker run --name app-mysql --detach --restart unless-stopped --log-opt max-size=\"10m\" --publish 3306:3306 -e MYSQL_ROOT_PASSWORD=\"secret123\" -e MYSQL_ROOT_HOST=\"%\" --label service=\"app-mysql\" private.registry/mysql:8.0",
+      new_command(:mysql).run.join(" ")
 
     assert_equal \
-      [:docker, :run, "--name", "app-redis", "-d", "--restart", "unless-stopped", "-p", "6379:6379", "-e", "SOMETHING=else", "--volume", "/var/lib/redis:/data", "--label", "service=app-redis", "--label", "cache=true", "redis:latest"], @redis.run
+      "docker run --name app-redis --detach --restart unless-stopped --log-opt max-size=\"10m\" --publish 6379:6379 -e SOMETHING=\"else\" --volume /var/lib/redis:/data --label service=\"app-redis\" --label cache=\"true\" redis:latest",
+      new_command(:redis).run.join(" ")
+
+    assert_equal \
+      "docker run --name app-busybox --detach --restart unless-stopped --log-opt max-size=\"10m\" --label service=\"app-busybox\" busybox:latest",
+      new_command(:busybox).run.join(" ")
+  end
+
+  test "run with logging config" do
+    @config[:logging] = { "driver" => "local", "options" => { "max-size" => "100m", "max-file" => "3" } }
+
+    assert_equal \
+      "docker run --name app-busybox --detach --restart unless-stopped --log-driver \"local\" --log-opt max-size=\"100m\" --log-opt max-file=\"3\" --label service=\"app-busybox\" busybox:latest",
+      new_command(:busybox).run.join(" ")
   end
 
   test "start" do
-    assert_equal [:docker, :container, :start, "app-mysql"], @mysql.start
+    assert_equal \
+      "docker container start app-mysql",
+      new_command(:mysql).start.join(" ")
   end
 
   test "stop" do
-    assert_equal [:docker, :container, :stop, "app-mysql"], @mysql.stop
+    assert_equal \
+      "docker container stop app-mysql",
+      new_command(:mysql).stop.join(" ")
   end
 
   test "info" do
-    assert_equal [:docker, :ps, "--filter", "label=service=app-mysql"], @mysql.info
+    assert_equal \
+      "docker ps --filter label=service=app-mysql",
+      new_command(:mysql).info.join(" ")
   end
 
 
   test "execute in new container" do
     assert_equal \
-      [ :docker, :run, "--rm", "-e", "MYSQL_ROOT_PASSWORD=secret123", "-e", "MYSQL_ROOT_HOST=%", "mysql:8.0", "mysql", "-u", "root" ],
-      @mysql.execute_in_new_container("mysql", "-u", "root")
+      "docker run --rm -e MYSQL_ROOT_PASSWORD=\"secret123\" -e MYSQL_ROOT_HOST=\"%\" private.registry/mysql:8.0 mysql -u root",
+      new_command(:mysql).execute_in_new_container("mysql", "-u", "root").join(" ")
   end
 
   test "execute in existing container" do
     assert_equal \
-      [ :docker, :exec, "app-mysql", "mysql", "-u", "root" ],
-      @mysql.execute_in_existing_container("mysql", "-u", "root")
+      "docker exec app-mysql mysql -u root",
+      new_command(:mysql).execute_in_existing_container("mysql", "-u", "root").join(" ")
   end
 
   test "execute in new container over ssh" do
-    @mysql.stub(:run_over_ssh, ->(cmd) { cmd.join(" ") }) do
-      assert_match %r|docker run -it --rm -e MYSQL_ROOT_PASSWORD=secret123 -e MYSQL_ROOT_HOST=% mysql:8.0 mysql -u root|,
-        @mysql.execute_in_new_container_over_ssh("mysql", "-u", "root")
+    new_command(:mysql).stub(:run_over_ssh, ->(cmd) { cmd.join(" ") }) do
+      assert_match %r|docker run -it --rm -e MYSQL_ROOT_PASSWORD=\"secret123\" -e MYSQL_ROOT_HOST=\"%\" private.registry/mysql:8.0 mysql -u root|,
+        new_command(:mysql).execute_in_new_container_over_ssh("mysql", "-u", "root")
     end
   end
 
   test "execute in existing container over ssh" do
-    @mysql.stub(:run_over_ssh, ->(cmd) { cmd.join(" ") }) do
+    new_command(:mysql).stub(:run_over_ssh, ->(cmd) { cmd.join(" ") }) do
       assert_match %r|docker exec -it app-mysql mysql -u root|,
-        @mysql.execute_in_existing_container_over_ssh("mysql", "-u", "root")
+        new_command(:mysql).execute_in_existing_container_over_ssh("mysql", "-u", "root")
     end
   end
 
 
 
   test "logs" do
-    assert_equal [:docker, :logs, "app-mysql", "-t", "2>&1"], @mysql.logs
-    assert_equal [:docker, :logs, "app-mysql", " --since 5m", " -n 100", "-t", "2>&1", "|", "grep 'thing'"], @mysql.logs(since: "5m", lines: 100, grep: "thing")
+    assert_equal \
+      "docker logs app-mysql --timestamps 2>&1",
+      new_command(:mysql).logs.join(" ")
+
+    assert_equal \
+      "docker logs app-mysql  --since 5m  --tail 100 --timestamps 2>&1 | grep 'thing'",
+      new_command(:mysql).logs(since: "5m", lines: 100, grep: "thing").join(" ")
   end
 
   test "follow logs" do
-    assert_equal "ssh -t root@1.1.1.5 'docker logs app-mysql -t -n 10 -f 2>&1'", @mysql.follow_logs
+    assert_equal \
+      "ssh -t root@1.1.1.5 'docker logs app-mysql --timestamps --tail 10 --follow 2>&1'",
+      new_command(:mysql).follow_logs
   end
 
   test "remove container" do
-    assert_equal [:docker, :container, :prune, "-f", "--filter", "label=service=app-mysql"], @mysql.remove_container
+    assert_equal \
+      "docker container prune --force --filter label=service=app-mysql",
+      new_command(:mysql).remove_container.join(" ")
   end
 
   test "remove image" do
-    assert_equal [:docker, :image, :prune, "-a", "-f", "--filter", "label=service=app-mysql"], @mysql.remove_image
+    assert_equal \
+      "docker image rm --force private.registry/mysql:8.0",
+      new_command(:mysql).remove_image.join(" ")
   end
+
+  private
+    def new_command(accessory)
+      Mrsk::Commands::Accessory.new(Mrsk::Configuration.new(@config), name: accessory)
+    end
 end

test/commands/app_test.rb

@@ -5,7 +5,6 @@ class CommandsAppTest < ActiveSupport::TestCase
     ENV["RAILS_MASTER_KEY"] = "456"
 
     @config = { service: "app", image: "dhh/app", registry: { "username" => "dhh", "password" => "secret" }, servers: [ "1.1.1.1" ], env: { "secret" => [ "RAILS_MASTER_KEY" ] } }
-    @app = Mrsk::Commands::App.new Mrsk::Configuration.new(@config).tap { |c| c.version = "999" }
   end
 
   teardown do
@@ -14,148 +13,262 @@ class CommandsAppTest < ActiveSupport::TestCase
 
   test "run" do
     assert_equal \
-      "docker run -d --restart unless-stopped --name app-999 -e RAILS_MASTER_KEY=456 --label service=app --label role=web --label traefik.http.routers.app.rule='PathPrefix(`/`)' --label traefik.http.services.app.loadbalancer.healthcheck.path=/up --label traefik.http.services.app.loadbalancer.healthcheck.interval=1s --label traefik.http.middlewares.app.retry.attempts=3 --label traefik.http.middlewares.app.retry.initialinterval=500ms dhh/app:999",
-      @app.run.join(" ")
+      "docker run --detach --restart unless-stopped --name app-web-999 -e MRSK_CONTAINER_NAME=\"app-web-999\" -e RAILS_MASTER_KEY=\"456\" --log-opt max-size=\"10m\" --label service=\"app\" --label role=\"web\" --label traefik.http.routers.app.rule=\"PathPrefix(\\`/\\`)\" --label traefik.http.services.app.loadbalancer.healthcheck.path=\"/up\" --label traefik.http.services.app.loadbalancer.healthcheck.interval=\"1s\" --label traefik.http.middlewares.app-retry.retry.attempts=\"5\" --label traefik.http.middlewares.app-retry.retry.initialinterval=\"500ms\" --label traefik.http.routers.app.middlewares=\"app-retry@docker\" dhh/app:999",
+      new_command.run.join(" ")
   end
 
   test "run with volumes" do
     @config[:volumes] = ["/local/path:/container/path" ]
 
     assert_equal \
-      "docker run -d --restart unless-stopped --name app-999 -e RAILS_MASTER_KEY=456 --volume /local/path:/container/path --label service=app --label role=web --label traefik.http.routers.app.rule='PathPrefix(`/`)' --label traefik.http.services.app.loadbalancer.healthcheck.path=/up --label traefik.http.services.app.loadbalancer.healthcheck.interval=1s --label traefik.http.middlewares.app.retry.attempts=3 --label traefik.http.middlewares.app.retry.initialinterval=500ms dhh/app:999",
-      @app.run.join(" ")
+      "docker run --detach --restart unless-stopped --name app-web-999 -e MRSK_CONTAINER_NAME=\"app-web-999\" -e RAILS_MASTER_KEY=\"456\" --log-opt max-size=\"10m\" --volume /local/path:/container/path --label service=\"app\" --label role=\"web\" --label traefik.http.routers.app.rule=\"PathPrefix(\\`/\\`)\" --label traefik.http.services.app.loadbalancer.healthcheck.path=\"/up\" --label traefik.http.services.app.loadbalancer.healthcheck.interval=\"1s\" --label traefik.http.middlewares.app-retry.retry.attempts=\"5\" --label traefik.http.middlewares.app-retry.retry.initialinterval=\"500ms\" --label traefik.http.routers.app.middlewares=\"app-retry@docker\" dhh/app:999",
+      new_command.run.join(" ")
+  end
+
+  test "run with custom healthcheck path" do
+    @config[:healthcheck] = { "path" => "/healthz" }
+
+    assert_equal \
+      "docker run --detach --restart unless-stopped --name app-web-999 -e MRSK_CONTAINER_NAME=\"app-web-999\" -e RAILS_MASTER_KEY=\"456\" --log-opt max-size=\"10m\" --label service=\"app\" --label role=\"web\" --label traefik.http.routers.app.rule=\"PathPrefix(\\`/\\`)\" --label traefik.http.services.app.loadbalancer.healthcheck.path=\"/healthz\" --label traefik.http.services.app.loadbalancer.healthcheck.interval=\"1s\" --label traefik.http.middlewares.app-retry.retry.attempts=\"5\" --label traefik.http.middlewares.app-retry.retry.initialinterval=\"500ms\" --label traefik.http.routers.app.middlewares=\"app-retry@docker\" dhh/app:999",
+      new_command.run.join(" ")
+  end
+
+  test "run with custom options" do
+    @config[:servers] = { "web" => [ "1.1.1.1" ], "jobs" => { "hosts" => [ "1.1.1.2" ], "cmd" => "bin/jobs", "options" => { "mount" => "somewhere", "cap-add" => true } } }
+    assert_equal \
+      "docker run --detach --restart unless-stopped --name app-jobs-999 -e MRSK_CONTAINER_NAME=\"app-jobs-999\" -e RAILS_MASTER_KEY=\"456\" --log-opt max-size=\"10m\" --label service=\"app\" --label role=\"jobs\" --mount \"somewhere\" --cap-add dhh/app:999 bin/jobs",
+      new_command(role: "jobs").run.join(" ")
+  end
+
+  test "run with logging config" do
+    @config[:logging] = { "driver" => "local", "options" => { "max-size" => "100m", "max-file" => "3" } }
+
+    assert_equal \
+      "docker run --detach --restart unless-stopped --name app-web-999 -e MRSK_CONTAINER_NAME=\"app-web-999\" -e RAILS_MASTER_KEY=\"456\" --log-driver \"local\" --log-opt max-size=\"100m\" --log-opt max-file=\"3\" --label service=\"app\" --label role=\"web\" --label traefik.http.routers.app.rule=\"PathPrefix(\\`/\\`)\" --label traefik.http.services.app.loadbalancer.healthcheck.path=\"/up\" --label traefik.http.services.app.loadbalancer.healthcheck.interval=\"1s\" --label traefik.http.middlewares.app-retry.retry.attempts=\"5\" --label traefik.http.middlewares.app-retry.retry.initialinterval=\"500ms\" --label traefik.http.routers.app.middlewares=\"app-retry@docker\" dhh/app:999",
+      new_command.run.join(" ")
   end
 
   test "start" do
     assert_equal \
-      "docker start app-999",
-      @app.start.join(" ")
+      "docker start app-web-999",
+      new_command.start.join(" ")
+  end
+
+  test "start with destination" do
+    @destination = "staging"
+    assert_equal \
+      "docker start app-web-staging-999",
+      new_command.start.join(" ")
   end
 
   test "stop" do
     assert_equal \
-      "docker ps -q --filter label=service=app | xargs docker stop",
-      @app.stop.join(" ")
+      "docker ps --quiet --filter label=service=app --filter label=role=web | xargs docker stop",
+      new_command.stop.join(" ")
+  end
+
+  test "stop with custom stop wait time" do
+    @config[:stop_wait_time] = 30
+    assert_equal \
+      "docker ps --quiet --filter label=service=app --filter label=role=web | xargs docker stop -t 30",
+      new_command.stop.join(" ")
+  end
+
+  test "stop with version" do
+    assert_equal \
+      "docker container ls --all --filter name=^app-web-123$ --quiet | xargs docker stop",
+      new_command.stop(version: "123").join(" ")
   end
 
   test "info" do
     assert_equal \
-      "docker ps --filter label=service=app",
-      @app.info.join(" ")
+      "docker ps --filter label=service=app --filter label=role=web",
+      new_command.info.join(" ")
+  end
+
+  test "info with destination" do
+    @destination = "staging"
+    assert_equal \
+      "docker ps --filter label=service=app --filter label=destination=staging --filter label=role=web",
+      new_command.info.join(" ")
   end
 
 
   test "logs" do
     assert_equal \
-      "docker ps -q --filter label=service=app | xargs docker logs 2>&1",
-      @app.logs.join(" ")
+      "docker ps --quiet --filter label=service=app --filter label=role=web | xargs docker logs 2>&1",
+      new_command.logs.join(" ")
 
     assert_equal \
-      "docker ps -q --filter label=service=app | xargs docker logs --since 5m 2>&1",
-      @app.logs(since: "5m").join(" ")
+      "docker ps --quiet --filter label=service=app --filter label=role=web | xargs docker logs --since 5m 2>&1",
+      new_command.logs(since: "5m").join(" ")
 
     assert_equal \
-      "docker ps -q --filter label=service=app | xargs docker logs -n 100 2>&1",
-      @app.logs(lines: "100").join(" ")
+      "docker ps --quiet --filter label=service=app --filter label=role=web | xargs docker logs --tail 100 2>&1",
+      new_command.logs(lines: "100").join(" ")
 
     assert_equal \
-      "docker ps -q --filter label=service=app | xargs docker logs --since 5m -n 100 2>&1",
-      @app.logs(since: "5m", lines: "100").join(" ")
+      "docker ps --quiet --filter label=service=app --filter label=role=web | xargs docker logs --since 5m --tail 100 2>&1",
+      new_command.logs(since: "5m", lines: "100").join(" ")
 
     assert_equal \
-      "docker ps -q --filter label=service=app | xargs docker logs 2>&1 | grep 'my-id'",
-      @app.logs(grep: "my-id").join(" ")
+      "docker ps --quiet --filter label=service=app --filter label=role=web | xargs docker logs 2>&1 | grep 'my-id'",
+      new_command.logs(grep: "my-id").join(" ")
 
     assert_equal \
-      "docker ps -q --filter label=service=app | xargs docker logs --since 5m 2>&1 | grep 'my-id'",
-      @app.logs(since: "5m", grep: "my-id").join(" ")
+      "docker ps --quiet --filter label=service=app --filter label=role=web | xargs docker logs --since 5m 2>&1 | grep 'my-id'",
+      new_command.logs(since: "5m", grep: "my-id").join(" ")
   end
 
   test "follow logs" do
-    @app.stub(:run_over_ssh, ->(cmd, host:) { cmd.join(" ") }) do
-      assert_equal \
-        "docker ps -q --filter label=service=app | xargs docker logs -t -n 10 -f 2>&1",
-        @app.follow_logs(host: "app-1")
+    assert_match \
+      "docker ps --quiet --filter label=service=app --filter label=role=web | xargs docker logs --timestamps --tail 10 --follow 2>&1",
+      new_command.follow_logs(host: "app-1")
 
-      assert_equal \
-        "docker ps -q --filter label=service=app | xargs docker logs -t -n 10 -f 2>&1 | grep \"Completed\"",
-        @app.follow_logs(host: "app-1", grep: "Completed")
-    end
+    assert_match \
+      "docker ps --quiet --filter label=service=app --filter label=role=web | xargs docker logs --timestamps --tail 10 --follow 2>&1 | grep \"Completed\"",
+      new_command.follow_logs(host: "app-1", grep: "Completed")
   end
 
 
   test "execute in new container" do
     assert_equal \
-      "docker run --rm -e RAILS_MASTER_KEY=456 dhh/app:999 bin/rails db:setup",
-      @app.execute_in_new_container("bin/rails", "db:setup").join(" ")
+      "docker run --rm -e RAILS_MASTER_KEY=\"456\" dhh/app:999 bin/rails db:setup",
+      new_command.execute_in_new_container("bin/rails", "db:setup").join(" ")
   end
 
   test "execute in existing container" do
     assert_equal \
-      "docker exec app-999 bin/rails db:setup",
-      @app.execute_in_existing_container("bin/rails", "db:setup").join(" ")
+      "docker exec app-web-999 bin/rails db:setup",
+      new_command.execute_in_existing_container("bin/rails", "db:setup").join(" ")
   end
 
   test "execute in new container over ssh" do
-    @app.stub(:run_over_ssh, ->(cmd, host:) { cmd.join(" ") }) do
-      assert_match %r|docker run -it --rm -e RAILS_MASTER_KEY=456 dhh/app:999 bin/rails c|,
-        @app.execute_in_new_container_over_ssh("bin/rails", "c", host: "app-1")
-    end
+    assert_match %r|docker run -it --rm -e RAILS_MASTER_KEY=\"456\" dhh/app:999 bin/rails c|,
+      new_command.execute_in_new_container_over_ssh("bin/rails", "c", host: "app-1")
   end
 
   test "execute in existing container over ssh" do
-    @app.stub(:run_over_ssh, ->(cmd, host:) { cmd.join(" ") }) do
-      assert_match %r|docker exec -it app-999 bin/rails c|,
-        @app.execute_in_existing_container_over_ssh("bin/rails", "c", host: "app-1")
-    end
+    assert_match %r|docker exec -it app-web-999 bin/rails c|,
+      new_command.execute_in_existing_container_over_ssh("bin/rails", "c", host: "app-1")
   end
 
   test "run over ssh" do
-    assert_equal "ssh -t root@1.1.1.1 'ls'", @app.run_over_ssh("ls", host: "1.1.1.1")
+    assert_equal "ssh -t root@1.1.1.1 'ls'", new_command.run_over_ssh("ls", host: "1.1.1.1")
   end
 
   test "run over ssh with custom user" do
-    @app = Mrsk::Commands::App.new Mrsk::Configuration.new(@config.tap { |c| c[:ssh] = { "user" => "app" } })
-    assert_equal "ssh -t app@1.1.1.1 'ls'", @app.run_over_ssh("ls", host: "1.1.1.1")
+    @config[:ssh] = { "user" => "app" }
+    assert_equal "ssh -t app@1.1.1.1 'ls'", new_command.run_over_ssh("ls", host: "1.1.1.1")
   end
 
   test "run over ssh with proxy" do
-    @app = Mrsk::Commands::App.new Mrsk::Configuration.new(@config.tap { |c| c[:ssh] = { "proxy" => "2.2.2.2" } })
-    assert_equal "ssh -J root@2.2.2.2 -t root@1.1.1.1 'ls'", @app.run_over_ssh("ls", host: "1.1.1.1")
+    @config[:ssh] = { "proxy" => "2.2.2.2" }
+    assert_equal "ssh -J root@2.2.2.2 -t root@1.1.1.1 'ls'", new_command.run_over_ssh("ls", host: "1.1.1.1")
   end
 
   test "run over ssh with proxy user" do
-    @app = Mrsk::Commands::App.new Mrsk::Configuration.new(@config.tap { |c| c[:ssh] = { "proxy" => "app@2.2.2.2" } })
-    assert_equal "ssh -J app@2.2.2.2 -t root@1.1.1.1 'ls'", @app.run_over_ssh("ls", host: "1.1.1.1")
+    @config[:ssh] = { "proxy" => "app@2.2.2.2" }
+    assert_equal "ssh -J app@2.2.2.2 -t root@1.1.1.1 'ls'", new_command.run_over_ssh("ls", host: "1.1.1.1")
   end
 
   test "run over ssh with custom user with proxy" do
-    @app = Mrsk::Commands::App.new Mrsk::Configuration.new(@config.tap { |c| c[:ssh] = { "user" => "app", "proxy" => "2.2.2.2" } })
-    assert_equal "ssh -J root@2.2.2.2 -t app@1.1.1.1 'ls'", @app.run_over_ssh("ls", host: "1.1.1.1")
+    @config[:ssh] = { "user" => "app", "proxy" => "2.2.2.2" }
+    assert_equal "ssh -J root@2.2.2.2 -t app@1.1.1.1 'ls'", new_command.run_over_ssh("ls", host: "1.1.1.1")
   end
 
 
   test "current_container_id" do
     assert_equal \
-      "docker ps -q --filter label=service=app",
-      @app.current_container_id.join(" ")
+      "docker ps --quiet --filter label=service=app --filter label=role=web",
+      new_command.current_container_id.join(" ")
+  end
+
+  test "current_container_id with destination" do
+    @destination = "staging"
+    assert_equal \
+      "docker ps --quiet --filter label=service=app --filter label=destination=staging --filter label=role=web",
+      new_command.current_container_id.join(" ")
   end
 
   test "container_id_for" do
     assert_equal \
-      "docker container ls -a -f name=app-999 -q",
-      @app.container_id_for(container_name: "app-999").join(" ")
+      "docker container ls --all --filter name=^app-999$ --quiet",
+      new_command.container_id_for(container_name: "app-999").join(" ")
   end
 
   test "current_running_version" do
     assert_equal \
-      "docker ps --filter label=service=app --format \"{{.Names}}\" | sed 's/-/\\n/g' | tail -n 1",
-      @app.current_running_version.join(" ")
+      "docker ps --filter label=service=app --filter label=role=web --format \"{{.Names}}\" | sed 's/-/\\n/g' | tail -n 1",
+      new_command.current_running_version.join(" ")
   end
 
-  test "most_recent_version_from_available_images" do
+  test "list_containers" do
     assert_equal \
-      "docker image ls --format \"{{.Tag}}\" dhh/app | head -n 1",
-      @app.most_recent_version_from_available_images.join(" ")
+      "docker container ls --all --filter label=service=app --filter label=role=web",
+      new_command.list_containers.join(" ")
   end
+
+  test "list_containers with destination" do
+    @destination = "staging"
+    assert_equal \
+      "docker container ls --all --filter label=service=app --filter label=destination=staging --filter label=role=web",
+      new_command.list_containers.join(" ")
+  end
+
+  test "list_container_names" do
+    assert_equal \
+      "docker container ls --all --filter label=service=app --filter label=role=web --format '{{ .Names }}'",
+      new_command.list_container_names.join(" ")
+  end
+
+  test "remove_container" do
+    assert_equal \
+      "docker container ls --all --filter name=^app-web-999$ --quiet | xargs docker container rm",
+      new_command.remove_container(version: "999").join(" ")
+  end
+
+  test "remove_container with destination" do
+    @destination = "staging"
+    assert_equal \
+      "docker container ls --all --filter name=^app-web-staging-999$ --quiet | xargs docker container rm",
+      new_command.remove_container(version: "999").join(" ")
+  end
+
+  test "remove_containers" do
+    assert_equal \
+      "docker container prune --force --filter label=service=app --filter label=role=web",
+      new_command.remove_containers.join(" ")
+  end
+
+  test "remove_containers with destination" do
+    @destination = "staging"
+    assert_equal \
+      "docker container prune --force --filter label=service=app --filter label=destination=staging --filter label=role=web",
+      new_command.remove_containers.join(" ")
+  end
+
+  test "list_images" do
+    assert_equal \
+      "docker image ls dhh/app",
+      new_command.list_images.join(" ")
+  end
+
+  test "remove_images" do
+    assert_equal \
+      "docker image prune --all --force --filter label=service=app --filter label=role=web",
+      new_command.remove_images.join(" ")
+  end
+
+  test "remove_images with destination" do
+    @destination = "staging"
+    assert_equal \
+      "docker image prune --all --force --filter label=service=app --filter label=destination=staging --filter label=role=web",
+      new_command.remove_images.join(" ")
+  end
+
+  private
+    def new_command(role: "web")
+      Mrsk::Commands::App.new(Mrsk::Configuration.new(@config, destination: @destination, version: "999"), role: role)
+    end
 end

test/commands/auditor_test.rb

@@ -0,0 +1,43 @@
+require "test_helper"
+
+class CommandsAuditorTest < ActiveSupport::TestCase
+  setup do
+    @config = {
+      service: "app", image: "dhh/app", registry: { "username" => "dhh", "password" => "secret" }, servers: [ "1.1.1.1" ],
+      audit_broadcast_cmd: "bin/audit_broadcast"
+    }
+  end
+
+  test "record" do
+    assert_match \
+      /echo '.* app removed container' >> mrsk-app-audit.log/,
+      new_command.record("app removed container").join(" ")
+  end
+
+  test "record with destination" do
+    @destination = "staging"
+
+    assert_match \
+      /echo '.* app removed container' >> mrsk-app-staging-audit.log/,
+      new_command.record("app removed container").join(" ")
+  end
+
+  test "record with role" do
+    @role = "web"
+
+    assert_match \
+      /echo '.* \[web\] app removed container' >> mrsk-app-audit.log/,
+      new_command.record("app removed container").join(" ")
+  end
+
+  test "broadcast" do
+    assert_match \
+      /bin\/audit_broadcast '\[.*\] app removed container'/,
+      new_command.broadcast("app removed container").join(" ")
+  end
+
+  private
+    def new_command
+      Mrsk::Commands::Auditor.new(Mrsk::Configuration.new(@config, destination: @destination, version: "123"), role: @role)
+    end
+end

test/commands/builder_test.rb

@@ -8,50 +8,82 @@ class CommandsBuilderTest < ActiveSupport::TestCase
   test "target multiarch by default" do
     builder = new_builder_command
     assert_equal "multiarch", builder.name
-    assert_equal [:docker, :buildx, :build, "--push", "--platform", "linux/amd64,linux/arm64", "--builder", "mrsk-app-multiarch", "-t", "dhh/app:123", "."], builder.push
+    assert_equal \
+      "docker buildx build --push --platform linux/amd64,linux/arm64 --builder mrsk-app-multiarch -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --file Dockerfile .",
+      builder.push.join(" ")
   end
 
   test "target native when multiarch is off" do
     builder = new_builder_command(builder: { "multiarch" => false })
     assert_equal "native", builder.name
-    assert_equal [:docker, :build, "-t", "dhh/app:123", ".", "&&", :docker, :push, "dhh/app:123"], builder.push
+    assert_equal \
+      "docker build -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --file Dockerfile . && docker push dhh/app:123 && docker push dhh/app:latest",
+      builder.push.join(" ")
   end
 
   test "target multiarch remote when local and remote is set" do
     builder = new_builder_command(builder: { "local" => { }, "remote" => { } })
     assert_equal "multiarch/remote", builder.name
-    assert_equal [:docker, :buildx, :build, "--push", "--platform", "linux/amd64,linux/arm64", "--builder", "mrsk-app-multiarch-remote", "-t", "dhh/app:123", "."], builder.push
+    assert_equal \
+      "docker buildx build --push --platform linux/amd64,linux/arm64 --builder mrsk-app-multiarch-remote -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --file Dockerfile .",
+      builder.push.join(" ")
   end
 
   test "target native remote when only remote is set" do
     builder = new_builder_command(builder: { "remote" => { "arch" => "amd64" } })
     assert_equal "native/remote", builder.name
-    assert_equal [:docker, :buildx, :build, "--push", "--platform", "linux/amd64", "--builder", "mrsk-app-native-remote", "-t", "dhh/app:123", "."], builder.push
+    assert_equal \
+      "docker buildx build --push --platform linux/amd64 --builder mrsk-app-native-remote -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --file Dockerfile .",
+      builder.push.join(" ")
   end
 
   test "build args" do
     builder = new_builder_command(builder: { "args" => { "a" => 1, "b" => 2 } })
-    assert_equal [ "--build-arg", "a=1", "--build-arg", "b=2" ], builder.target.build_args
+    assert_equal \
+      "-t dhh/app:123 -t dhh/app:latest --label service=\"app\" --build-arg a=\"1\" --build-arg b=\"2\" --file Dockerfile",
+      builder.target.build_options.join(" ")
   end
 
   test "build secrets" do
     builder = new_builder_command(builder: { "secrets" => ["token_a", "token_b"] })
-    assert_equal [ "--secret", "id=token_a", "--secret", "id=token_b" ], builder.target.build_secrets
+    assert_equal \
+      "-t dhh/app:123 -t dhh/app:latest --label service=\"app\" --secret id=\"token_a\" --secret id=\"token_b\" --file Dockerfile",
+      builder.target.build_options.join(" ")
+  end
+
+  test "build dockerfile" do
+    builder = new_builder_command(builder: { "dockerfile" => "Dockerfile.xyz" })
+    assert_equal \
+      "-t dhh/app:123 -t dhh/app:latest --label service=\"app\" --file Dockerfile.xyz",
+      builder.target.build_options.join(" ")
+  end
+
+  test "build context" do
+    builder = new_builder_command(builder: { "context" => ".." })
+    assert_equal \
+      "docker buildx build --push --platform linux/amd64,linux/arm64 --builder mrsk-app-multiarch -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --file Dockerfile ..",
+      builder.push.join(" ")
   end
 
   test "native push with build args" do
     builder = new_builder_command(builder: { "multiarch" => false, "args" => { "a" => 1, "b" => 2 } })
-    assert_equal [ :docker, :build, "-t", "--build-arg", "a=1", "--build-arg", "b=2", "dhh/app:123", ".", "&&", :docker, :push, "dhh/app:123" ], builder.push
+    assert_equal \
+      "docker build -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --build-arg a=\"1\" --build-arg b=\"2\" --file Dockerfile . && docker push dhh/app:123 && docker push dhh/app:latest",
+      builder.push.join(" ")
   end
 
   test "multiarch push with build args" do
     builder = new_builder_command(builder: { "args" => { "a" => 1, "b" => 2 } })
-    assert_equal [ :docker, :buildx, :build, "--push", "--platform", "linux/amd64,linux/arm64", "--builder", "mrsk-app-multiarch", "-t", "dhh/app:123", "--build-arg", "a=1", "--build-arg", "b=2", "." ], builder.push
+    assert_equal \
+      "docker buildx build --push --platform linux/amd64,linux/arm64 --builder mrsk-app-multiarch -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --build-arg a=\"1\" --build-arg b=\"2\" --file Dockerfile .",
+      builder.push.join(" ")
   end
 
   test "native push with with build secrets" do
     builder = new_builder_command(builder: { "multiarch" => false, "secrets" => [ "a", "b" ] })
-    assert_equal [ :docker, :build, "-t", "--secret", "id=a", "--secret", "id=b", "dhh/app:123", ".", "&&", :docker, :push, "dhh/app:123" ], builder.push
+    assert_equal \
+      "docker build -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --secret id=\"a\" --secret id=\"b\" --file Dockerfile . && docker push dhh/app:123 && docker push dhh/app:latest",
+      builder.push.join(" ")
   end
 
   private

test/commands/healthcheck_test.rb

@@ -0,0 +1,100 @@
+require "test_helper"
+
+class CommandsHealthcheckTest < ActiveSupport::TestCase
+  setup do
+    @config = {
+      service: "app", image: "dhh/app", registry: { "username" => "dhh", "password" => "secret" }, servers: [ "1.1.1.1" ],
+      traefik: { "args" => { "accesslog.format" => "json", "metrics.prometheus.buckets" => "0.1,0.3,1.2,5.0" } }
+    }
+  end
+
+  test "run" do
+    assert_equal \
+      "docker run --detach --name healthcheck-app-123 --publish 3999:3000 --label service=healthcheck-app -e MRSK_CONTAINER_NAME=\"healthcheck-app\" dhh/app:123",
+      new_command.run.join(" ")
+  end
+
+  test "run with custom port" do
+    @config[:healthcheck] = { "port" => 3001 }
+
+    assert_equal \
+      "docker run --detach --name healthcheck-app-123 --publish 3999:3001 --label service=healthcheck-app -e MRSK_CONTAINER_NAME=\"healthcheck-app\" dhh/app:123",
+      new_command.run.join(" ")
+  end
+
+  test "run with destination" do
+    @destination = "staging"
+
+    assert_equal \
+      "docker run --detach --name healthcheck-app-staging-123 --publish 3999:3000 --label service=healthcheck-app-staging -e MRSK_CONTAINER_NAME=\"healthcheck-app-staging\" dhh/app:123",
+      new_command.run.join(" ")
+  end
+
+  test "run with custom options" do
+    @config[:servers] = { "web" => { "hosts" => [ "1.1.1.1" ], "options" => { "mount" => "somewhere" } } }
+    assert_equal \
+      "docker run --detach --name healthcheck-app-123 --publish 3999:3000 --label service=healthcheck-app -e MRSK_CONTAINER_NAME=\"healthcheck-app\" --mount \"somewhere\" dhh/app:123",
+      new_command.run.join(" ")
+  end
+
+  test "curl" do
+    assert_equal \
+      "curl --silent --output /dev/null --write-out '%{http_code}' --max-time 2 http://localhost:3999/up",
+      new_command.curl.join(" ")
+  end
+
+  test "curl with custom path" do
+    @config[:healthcheck] = { "path" => "/healthz" }
+
+    assert_equal \
+      "curl --silent --output /dev/null --write-out '%{http_code}' --max-time 2 http://localhost:3999/healthz",
+      new_command.curl.join(" ")
+  end
+
+  test "stop" do
+    assert_equal \
+      "docker container ls --all --filter name=^healthcheck-app-123$ --quiet | xargs docker stop",
+      new_command.stop.join(" ")
+  end
+
+  test "stop with destination" do
+    @destination = "staging"
+
+    assert_equal \
+      "docker container ls --all --filter name=^healthcheck-app-staging-123$ --quiet | xargs docker stop",
+      new_command.stop.join(" ")
+  end
+
+  test "remove" do
+    assert_equal \
+      "docker container ls --all --filter name=^healthcheck-app-123$ --quiet | xargs docker container rm",
+      new_command.remove.join(" ")
+  end
+
+  test "remove with destination" do
+    @destination = "staging"
+
+    assert_equal \
+      "docker container ls --all --filter name=^healthcheck-app-staging-123$ --quiet | xargs docker container rm",
+      new_command.remove.join(" ")
+  end
+
+  test "logs" do
+    assert_equal \
+      "docker container ls --all --filter name=^healthcheck-app-123$ --quiet | xargs docker logs --tail 50 2>&1",
+      new_command.logs.join(" ")
+  end
+
+  test "logs with destination" do
+    @destination = "staging"
+
+    assert_equal \
+      "docker container ls --all --filter name=^healthcheck-app-staging-123$ --quiet | xargs docker logs --tail 50 2>&1",
+      new_command.logs.join(" ")
+  end
+
+  private
+    def new_command
+      Mrsk::Commands::Healthcheck.new(Mrsk::Configuration.new(@config, destination: @destination, version: "123"))
+    end
+end

test/commands/lock_test.rb

@@ -0,0 +1,33 @@
+require "test_helper"
+
+class CommandsLockTest < ActiveSupport::TestCase
+  setup do
+    @config = {
+      service: "app", image: "dhh/app", registry: { "username" => "dhh", "password" => "secret" }, servers: [ "1.1.1.1" ],
+      traefik: { "args" => { "accesslog.format" => "json", "metrics.prometheus.buckets" => "0.1,0.3,1.2,5.0" } }
+    }
+  end
+
+  test "status" do
+    assert_equal \
+      "stat mrsk_lock > /dev/null && cat mrsk_lock/details | base64 -d",
+      new_command.status.join(" ")
+  end
+
+  test "acquire" do
+    assert_match \
+      /mkdir mrsk_lock && echo ".*" > mrsk_lock\/details/m,
+      new_command.acquire("Hello", "123").join(" ")
+  end
+
+  test "release" do
+    assert_match \
+      "rm mrsk_lock/details && rm -r mrsk_lock",
+      new_command.release.join(" ")
+  end
+
+  private
+    def new_command
+      Mrsk::Commands::Lock.new(Mrsk::Configuration.new(@config, version: "123"))
+    end
+end

test/commands/prune_test.rb

@@ -0,0 +1,27 @@
+require "test_helper"
+
+class CommandsPruneTest < ActiveSupport::TestCase
+  setup do
+    @config = {
+      service: "app", image: "dhh/app", registry: { "username" => "dhh", "password" => "secret" }, servers: [ "1.1.1.1" ],
+      traefik: { "args" => { "accesslog.format" => "json", "metrics.prometheus.buckets" => "0.1,0.3,1.2,5.0" } }
+    }
+  end
+
+  test "images" do
+    assert_equal \
+      "docker image prune --all --force --filter label=service=app --filter until=168h",
+      new_command.images.join(" ")
+  end
+
+  test "containers" do
+    assert_equal \
+      "docker container prune --force --filter label=service=app --filter until=72h",
+      new_command.containers.join(" ")
+  end
+
+  private
+    def new_command
+      Mrsk::Commands::Prune.new(Mrsk::Configuration.new(@config, version: "123"))
+    end
+end

test/commands/registry_test.rb

@@ -14,10 +14,36 @@ class CommandsRegistryTest < ActiveSupport::TestCase
   end
 
   test "registry login" do
-    assert_equal [ :docker, :login, "hub.docker.com", "-u", "dhh", "-p", "secret" ], @registry.login
+    assert_equal \
+      "docker login hub.docker.com -u dhh -p secret",
+      @registry.login.join(" ")
+  end
+
+  test "registry login with ENV password" do
+    ENV["MRSK_REGISTRY_PASSWORD"] = "more-secret"
+    @config[:registry]["password"] = [ "MRSK_REGISTRY_PASSWORD" ]
+
+    assert_equal \
+      "docker login hub.docker.com -u dhh -p more-secret",
+      @registry.login.join(" ")
+  ensure
+    ENV.delete("MRSK_REGISTRY_PASSWORD")
+  end
+
+  test "registry login with ENV username" do
+    ENV["MRSK_REGISTRY_USERNAME"] = "also-secret"
+    @config[:registry]["username"] = [ "MRSK_REGISTRY_USERNAME" ]
+
+    assert_equal \
+      "docker login hub.docker.com -u also-secret -p secret",
+      @registry.login.join(" ")
+  ensure
+    ENV.delete("MRSK_REGISTRY_USERNAME")
   end
 
   test "registry logout" do
-    assert_equal [:docker, :logout, "hub.docker.com"], @registry.logout
+    assert_equal \
+      "docker logout hub.docker.com",
+      @registry.logout.join(" ")
   end
 end

test/commands/traefik_test.rb

@@ -4,69 +4,134 @@ class CommandsTraefikTest < ActiveSupport::TestCase
   setup do
     @config = {
       service: "app", image: "dhh/app", registry: { "username" => "dhh", "password" => "secret" }, servers: [ "1.1.1.1" ],
-      traefik: { "args" => { "accesslog.format" => "json", "metrics.prometheus.buckets" => "0.1,0.3,1.2,5.0" } }
+      traefik: { "args" => { "accesslog.format" => "json", "api.insecure" => true, "metrics.prometheus.buckets" => "0.1,0.3,1.2,5.0" } }
     }
   end
 
   test "run" do
     assert_equal \
-      [:docker, :run, "--name traefik", "-d", "--restart unless-stopped", "-p 80:80", "-v /var/run/docker.sock:/var/run/docker.sock", "traefik", "--providers.docker", "--log.level=DEBUG", "--accesslog.format", "json", "--metrics.prometheus.buckets", "0.1,0.3,1.2,5.0"],
-      new_command.run
+      "docker run --name traefik --detach --restart unless-stopped --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --log-opt max-size=\"10m\" traefik:v2.9.9 --providers.docker --log.level=DEBUG --accesslog.format=\"json\" --api.insecure --metrics.prometheus.buckets=\"0.1,0.3,1.2,5.0\"",
+      new_command.run.join(" ")
+
+    @config[:traefik]["host_port"] = "8080"
+    assert_equal \
+      "docker run --name traefik --detach --restart unless-stopped --publish 8080:80 --volume /var/run/docker.sock:/var/run/docker.sock --log-opt max-size=\"10m\" traefik:v2.9.9 --providers.docker --log.level=DEBUG --accesslog.format=\"json\" --api.insecure --metrics.prometheus.buckets=\"0.1,0.3,1.2,5.0\"",
+      new_command.run.join(" ")
+  end
+
+  test "run with ports configured" do
+    assert_equal \
+      "docker run --name traefik --detach --restart unless-stopped --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --log-opt max-size=\"10m\" traefik:v2.9.9 --providers.docker --log.level=DEBUG --accesslog.format=\"json\" --api.insecure --metrics.prometheus.buckets=\"0.1,0.3,1.2,5.0\"",
+      new_command.run.join(" ")
+
+    @config[:traefik]["options"] = {"publish" => %w[9000:9000 9001:9001]}
+    assert_equal \
+      "docker run --name traefik --detach --restart unless-stopped --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --log-opt max-size=\"10m\" --publish \"9000:9000\" --publish \"9001:9001\" traefik:v2.9.9 --providers.docker --log.level=DEBUG --accesslog.format=\"json\" --api.insecure --metrics.prometheus.buckets=\"0.1,0.3,1.2,5.0\"",
+      new_command.run.join(" ")
+  end
+
+  test "run with volumes configured" do
+    assert_equal \
+      "docker run --name traefik --detach --restart unless-stopped --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --log-opt max-size=\"10m\" traefik:v2.9.9 --providers.docker --log.level=DEBUG --accesslog.format=\"json\" --api.insecure --metrics.prometheus.buckets=\"0.1,0.3,1.2,5.0\"",
+      new_command.run.join(" ")
+
+    @config[:traefik]["options"] = {"volume" => %w[./letsencrypt/acme.json:/letsencrypt/acme.json] }
+    assert_equal \
+      "docker run --name traefik --detach --restart unless-stopped --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --log-opt max-size=\"10m\" --volume \"./letsencrypt/acme.json:/letsencrypt/acme.json\" traefik:v2.9.9 --providers.docker --log.level=DEBUG --accesslog.format=\"json\" --api.insecure --metrics.prometheus.buckets=\"0.1,0.3,1.2,5.0\"",
+      new_command.run.join(" ")
+  end
+
+  test "run with several options configured" do
+    assert_equal \
+      "docker run --name traefik --detach --restart unless-stopped --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --log-opt max-size=\"10m\" traefik:v2.9.9 --providers.docker --log.level=DEBUG --accesslog.format=\"json\" --api.insecure --metrics.prometheus.buckets=\"0.1,0.3,1.2,5.0\"",
+      new_command.run.join(" ")
+
+    @config[:traefik]["options"] = {"volume" => %w[./letsencrypt/acme.json:/letsencrypt/acme.json], "publish" => %w[8080:8080], "memory" => "512m"}
+    assert_equal \
+      "docker run --name traefik --detach --restart unless-stopped --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --log-opt max-size=\"10m\" --volume \"./letsencrypt/acme.json:/letsencrypt/acme.json\" --publish \"8080:8080\" --memory \"512m\" traefik:v2.9.9 --providers.docker --log.level=DEBUG --accesslog.format=\"json\" --api.insecure --metrics.prometheus.buckets=\"0.1,0.3,1.2,5.0\"",
+      new_command.run.join(" ")
+  end
+
+  test "run without configuration" do
+    @config.delete(:traefik)
+
+    assert_equal \
+      "docker run --name traefik --detach --restart unless-stopped --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --log-opt max-size=\"10m\" traefik:v2.9.9 --providers.docker --log.level=DEBUG",
+      new_command.run.join(" ")
+  end
+
+  test "run with logging config" do
+    @config[:logging] = { "driver" => "local", "options" => { "max-size" => "100m", "max-file" => "3" } }
+
+    assert_equal \
+      "docker run --name traefik --detach --restart unless-stopped --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --log-driver \"local\" --log-opt max-size=\"100m\" --log-opt max-file=\"3\" traefik:v2.9.9 --providers.docker --log.level=DEBUG --accesslog.format=\"json\" --api.insecure --metrics.prometheus.buckets=\"0.1,0.3,1.2,5.0\"",
+      new_command.run.join(" ")
   end
 
   test "traefik start" do
     assert_equal \
-      [:docker, :container, :start, 'traefik'], new_command.start
+      "docker container start traefik",
+      new_command.start.join(" ")
   end
 
   test "traefik stop" do
     assert_equal \
-      [:docker, :container, :stop, 'traefik'], new_command.stop
+      "docker container stop traefik",
+      new_command.stop.join(" ")
   end
 
   test "traefik info" do
     assert_equal \
-      [:docker, :ps, '--filter', 'name=traefik'], new_command.info
+      "docker ps --filter name=^traefik$",
+      new_command.info.join(" ")
   end
 
   test "traefik logs" do
     assert_equal \
-      [:docker, :logs, 'traefik', '-t', '2>&1'], new_command.logs
+      "docker logs traefik --timestamps 2>&1",
+      new_command.logs.join(" ")
   end
 
   test "traefik logs since 2h" do
     assert_equal \
-      [:docker, :logs, 'traefik', ' --since 2h', '-t', '2>&1'], new_command.logs(since: '2h')
+      "docker logs traefik  --since 2h --timestamps 2>&1",
+      new_command.logs(since: '2h').join(" ")
   end
 
   test "traefik logs last 10 lines" do
     assert_equal \
-      [:docker, :logs, 'traefik', ' -n 10', '-t', '2>&1'], new_command.logs(lines: 10)
+      "docker logs traefik  --tail 10 --timestamps 2>&1",
+      new_command.logs(lines: 10).join(" ")
   end
 
   test "traefik logs with grep hello!" do
     assert_equal \
-      [:docker, :logs, 'traefik', '-t', '2>&1', "|", "grep 'hello!'"], new_command.logs(grep: 'hello!')
+      "docker logs traefik --timestamps 2>&1 | grep 'hello!'",
+      new_command.logs(grep: 'hello!').join(" ")
   end
 
   test "traefik remove container" do
     assert_equal \
-      [:docker, :container, :prune, "-f", "--filter", "label=org.opencontainers.image.title=Traefik"], new_command.remove_container
+      "docker container prune --force --filter label=org.opencontainers.image.title=Traefik",
+      new_command.remove_container.join(" ")
   end
 
   test "traefik remove image" do
     assert_equal \
-    [:docker, :image, :prune, "-a", "-f", "--filter", "label=org.opencontainers.image.title=Traefik"], new_command.remove_image
+      "docker image prune --all --force --filter label=org.opencontainers.image.title=Traefik",
+      new_command.remove_image.join(" ")
   end
 
   test "traefik follow logs" do
     assert_equal \
-    "ssh -t root@1.1.1.1 'docker logs traefik -t -n 10 -f 2>&1'", new_command.follow_logs(host: @config[:servers].first)
+      "ssh -t root@1.1.1.1 'docker logs traefik --timestamps --tail 10 --follow 2>&1'",
+      new_command.follow_logs(host: @config[:servers].first)
   end
 
   test "traefik follow logs with grep hello!" do
     assert_equal \
-    "ssh -t root@1.1.1.1 'docker logs traefik -t -n 10 -f 2>&1 | grep \"hello!\"'", new_command.follow_logs(host: @config[:servers].first, grep: 'hello!')
+      "ssh -t root@1.1.1.1 'docker logs traefik --timestamps --tail 10 --follow 2>&1 | grep \"hello!\"'",
+      new_command.follow_logs(host: @config[:servers].first, grep: 'hello!')
   end
 
   private

test/configuration/accessory_test.rb

@@ -4,7 +4,10 @@ class ConfigurationAccessoryTest < ActiveSupport::TestCase
   setup do
     @deploy = {
       service: "app", image: "dhh/app", registry: { "username" => "dhh", "password" => "secret" },
-      servers: [ "1.1.1.1", "1.1.1.2" ],
+      servers: {
+        "web" => [ "1.1.1.1", "1.1.1.2" ],
+        "workers" => [ "1.1.1.3", "1.1.1.4" ]
+      },
       env: { "REDIS_URL" => "redis://x/y" },
       accessories: {
         "mysql" => {
@@ -29,7 +32,7 @@ class ConfigurationAccessoryTest < ActiveSupport::TestCase
         },
         "redis" => {
           "image" => "redis:latest",
-          "host" => "1.1.1.6",
+          "hosts" => [ "1.1.1.6", "1.1.1.7" ],
           "port" => "6379:6379",
           "labels" => {
             "cache" => true
@@ -39,7 +42,26 @@ class ConfigurationAccessoryTest < ActiveSupport::TestCase
           },
           "volumes" => [
             "/var/lib/redis:/data"
-          ]
+          ],
+          "options" => {
+            "cpus" => 4,
+            "memory" => "2GB"
+          }
+        },
+        "monitoring" => {
+          "image" => "monitoring:latest",
+          "roles" => [ "web" ],
+          "port" => "4321:4321",
+          "labels" => {
+            "cache" => true
+          },
+          "env" => {
+            "STATSD_PORT" => "8126"
+          },
+          "options" => {
+            "cpus" => 4,
+            "memory" => "2GB"
+          }
         }
       }
     }
@@ -58,8 +80,9 @@ class ConfigurationAccessoryTest < ActiveSupport::TestCase
   end
 
   test "host" do
-    assert_equal "1.1.1.5", @config.accessory(:mysql).host
-    assert_equal "1.1.1.6", @config.accessory(:redis).host
+    assert_equal ["1.1.1.5"], @config.accessory(:mysql).hosts
+    assert_equal ["1.1.1.6", "1.1.1.7"], @config.accessory(:redis).hosts
+    assert_equal ["1.1.1.1", "1.1.1.2"], @config.accessory(:monitoring).hosts
   end
 
   test "missing host" do
@@ -67,25 +90,36 @@ class ConfigurationAccessoryTest < ActiveSupport::TestCase
     @config = Mrsk::Configuration.new(@deploy)
 
     assert_raises(ArgumentError) do
-      @config.accessory(:mysql).host
+      @config.accessory(:mysql).hosts
     end
   end
 
+  test "setting host, hosts and roles" do
+    @deploy[:accessories]["mysql"]["hosts"] = true
+    @deploy[:accessories]["mysql"]["roles"] = true
+    @config = Mrsk::Configuration.new(@deploy)
+
+    exception = assert_raises(ArgumentError) do
+      @config.accessory(:mysql).hosts
+    end
+    assert_equal "Specify one of `host`, `hosts` or `roles` for accessory `mysql`", exception.message
+  end
+
   test "label args" do
-    assert_equal ["--label", "service=app-mysql"], @config.accessory(:mysql).label_args
-    assert_equal ["--label", "service=app-redis", "--label", "cache=true"], @config.accessory(:redis).label_args
+    assert_equal ["--label", "service=\"app-mysql\""], @config.accessory(:mysql).label_args
+    assert_equal ["--label", "service=\"app-redis\"", "--label", "cache=\"true\""], @config.accessory(:redis).label_args
   end
 
   test "env args with secret" do
     ENV["MYSQL_ROOT_PASSWORD"] = "secret123"
-    assert_equal ["-e", "MYSQL_ROOT_PASSWORD=secret123", "-e", "MYSQL_ROOT_HOST=%"], @config.accessory(:mysql).env_args
+    assert_equal ["-e", "MYSQL_ROOT_PASSWORD=\"secret123\"", "-e", "MYSQL_ROOT_HOST=\"%\""], @config.accessory(:mysql).env_args
     assert @config.accessory(:mysql).env_args[1].is_a?(SSHKit::Redaction)
   ensure
     ENV["MYSQL_ROOT_PASSWORD"] = nil
   end
 
   test "env args without secret" do
-    assert_equal ["-e", "SOMETHING=else"], @config.accessory(:redis).env_args
+    assert_equal ["-e", "SOMETHING=\"else\""], @config.accessory(:redis).env_args
   end
 
   test "volume args" do
@@ -104,4 +138,8 @@ class ConfigurationAccessoryTest < ActiveSupport::TestCase
   test "directories" do
     assert_equal({"$PWD/app-mysql/data"=>"/var/lib/mysql"}, @config.accessory(:mysql).directories)
   end
+
+  test "options" do
+    assert_equal ["--cpus", "\"4\"", "--memory", "\"2GB\""], @config.accessory(:redis).option_args
+  end
 end

test/configuration/role_test.rb

@@ -38,11 +38,11 @@ class ConfigurationRoleTest < ActiveSupport::TestCase
   end
 
   test "label args" do
-    assert_equal [ "--label", "service=app", "--label", "role=workers" ], @config_with_roles.role(:workers).label_args
+    assert_equal [ "--label", "service=\"app\"", "--label", "role=\"workers\"" ], @config_with_roles.role(:workers).label_args
   end
 
   test "special label args for web" do
-    assert_equal [ "--label", "service=app", "--label", "role=web", "--label", "traefik.http.routers.app.rule='PathPrefix(`/`)'", "--label", "traefik.http.services.app.loadbalancer.healthcheck.path=/up", "--label", "traefik.http.services.app.loadbalancer.healthcheck.interval=1s", "--label", "traefik.http.middlewares.app.retry.attempts=3", "--label", "traefik.http.middlewares.app.retry.initialinterval=500ms"], @config.role(:web).label_args
+    assert_equal [ "--label", "service=\"app\"", "--label", "role=\"web\"", "--label", "traefik.http.routers.app.rule=\"PathPrefix(\\`/\\`)\"", "--label", "traefik.http.services.app.loadbalancer.healthcheck.path=\"/up\"", "--label", "traefik.http.services.app.loadbalancer.healthcheck.interval=\"1s\"", "--label", "traefik.http.middlewares.app-retry.retry.attempts=\"5\"", "--label", "traefik.http.middlewares.app-retry.retry.initialinterval=\"500ms\"", "--label", "traefik.http.routers.app.middlewares=\"app-retry@docker\"" ], @config.role(:web).label_args
   end
 
   test "custom labels" do
@@ -57,8 +57,8 @@ class ConfigurationRoleTest < ActiveSupport::TestCase
   end
 
   test "overwriting default traefik label" do
-    @deploy[:labels] = { "traefik.http.routers.app.rule" => "'Host(`example.com`) || (Host(`example.org`) && Path(`/traefik`))'" }
-    assert_equal "'Host(`example.com`) || (Host(`example.org`) && Path(`/traefik`))'", @config.role(:web).labels["traefik.http.routers.app.rule"]
+    @deploy[:labels] = { "traefik.http.routers.app.rule" => "\"Host(\\`example.com\\`) || (Host(\\`example.org\\`) && Path(\\`/traefik\\`))\"" }
+    assert_equal "\"Host(\\`example.com\\`) || (Host(\\`example.org\\`) && Path(\\`/traefik\\`))\"", @config.role(:web).labels["traefik.http.routers.app.rule"]
   end
 
   test "default traefik label on non-web role" do
@@ -66,12 +66,12 @@ class ConfigurationRoleTest < ActiveSupport::TestCase
       c[:servers]["beta"] = { "traefik" => "true", "hosts" => [ "1.1.1.5" ] }
     })
 
-    assert_equal [ "--label", "service=app", "--label", "role=beta", "--label", "traefik.http.routers.app.rule='PathPrefix(`/`)'", "--label", "traefik.http.services.app.loadbalancer.healthcheck.path=/up", "--label", "traefik.http.services.app.loadbalancer.healthcheck.interval=1s", "--label", "traefik.http.middlewares.app.retry.attempts=3", "--label", "traefik.http.middlewares.app.retry.initialinterval=500ms" ], config.role(:beta).label_args
+    assert_equal [ "--label", "service=\"app\"", "--label", "role=\"beta\"", "--label", "traefik.http.routers.app.rule=\"PathPrefix(\\`/\\`)\"", "--label", "traefik.http.services.app.loadbalancer.healthcheck.path=\"/up\"", "--label", "traefik.http.services.app.loadbalancer.healthcheck.interval=\"1s\"", "--label", "traefik.http.middlewares.app-retry.retry.attempts=\"5\"", "--label", "traefik.http.middlewares.app-retry.retry.initialinterval=\"500ms\"", "--label", "traefik.http.routers.app.middlewares=\"app-retry@docker\"" ], config.role(:beta).label_args
   end
 
   test "env overwritten by role" do
     assert_equal "redis://a/b", @config_with_roles.role(:workers).env["REDIS_URL"]
-    assert_equal ["-e", "REDIS_URL=redis://a/b", "-e", "WEB_CONCURRENCY=4"], @config_with_roles.role(:workers).env_args
+    assert_equal ["-e", "REDIS_URL=\"redis://a/b\"", "-e", "WEB_CONCURRENCY=\"4\""], @config_with_roles.role(:workers).env_args
   end
 
   test "env secret overwritten by role" do
@@ -95,9 +95,9 @@ class ConfigurationRoleTest < ActiveSupport::TestCase
     }
 
     ENV["REDIS_PASSWORD"] = "secret456"
-    ENV["DB_PASSWORD"] = "secret123"
+    ENV["DB_PASSWORD"] = "secret&\"123"
 
-    assert_equal ["-e", "REDIS_PASSWORD=secret456", "-e", "DB_PASSWORD=secret123", "-e", "REDIS_URL=redis://a/b", "-e", "WEB_CONCURRENCY=4"], @config_with_roles.role(:workers).env_args
+    assert_equal ["-e", "REDIS_PASSWORD=\"secret456\"", "-e", "DB_PASSWORD=\"secret&\\\"123\"", "-e", "REDIS_URL=\"redis://a/b\"", "-e", "WEB_CONCURRENCY=\"4\""], @config_with_roles.role(:workers).env_args
   ensure
     ENV["REDIS_PASSWORD"] = nil
     ENV["DB_PASSWORD"] = nil
@@ -116,7 +116,7 @@ class ConfigurationRoleTest < ActiveSupport::TestCase
 
     ENV["DB_PASSWORD"] = "secret123"
 
-    assert_equal ["-e", "DB_PASSWORD=secret123", "-e", "REDIS_URL=redis://a/b", "-e", "WEB_CONCURRENCY=4"], @config_with_roles.role(:workers).env_args
+    assert_equal ["-e", "DB_PASSWORD=\"secret123\"", "-e", "REDIS_URL=\"redis://a/b\"", "-e", "WEB_CONCURRENCY=\"4\""], @config_with_roles.role(:workers).env_args
   ensure
     ENV["DB_PASSWORD"] = nil
   end
@@ -133,7 +133,7 @@ class ConfigurationRoleTest < ActiveSupport::TestCase
 
     ENV["REDIS_PASSWORD"] = "secret456"
 
-    assert_equal ["-e", "REDIS_PASSWORD=secret456", "-e", "REDIS_URL=redis://a/b", "-e", "WEB_CONCURRENCY=4"], @config_with_roles.role(:workers).env_args
+    assert_equal ["-e", "REDIS_PASSWORD=\"secret456\"", "-e", "REDIS_URL=\"redis://a/b\"", "-e", "WEB_CONCURRENCY=\"4\""], @config_with_roles.role(:workers).env_args
   ensure
     ENV["REDIS_PASSWORD"] = nil
   end

test/configuration_test.rb

@@ -3,6 +3,7 @@ require "test_helper"
 class ConfigurationTest < ActiveSupport::TestCase
   setup do
     ENV["RAILS_MASTER_KEY"] = "456"
+    ENV["VERSION"] = "missing"
 
     @deploy = {
       service: "app", image: "dhh/app",
@@ -15,23 +16,29 @@ class ConfigurationTest < ActiveSupport::TestCase
     @config = Mrsk::Configuration.new(@deploy)
 
     @deploy_with_roles = @deploy.dup.merge({
-      servers: { "web" => [ "1.1.1.1", "1.1.1.2" ], "workers" => { "hosts" => [ "1.1.1.3", "1.1.1.4" ] } } })
+      servers: { "web" => [ "1.1.1.1", "1.1.1.2" ], "workers" => { "hosts" => [ "1.1.1.1", "1.1.1.3" ] } } })
 
     @config_with_roles = Mrsk::Configuration.new(@deploy_with_roles)
   end
 
   teardown do
-    ENV["RAILS_MASTER_KEY"] = nil
+    ENV.delete("RAILS_MASTER_KEY")
+    ENV.delete("VERSION")
   end
 
-  test "ensure valid keys" do
-    assert_raise(ArgumentError) do
-      Mrsk::Configuration.new(@deploy.tap { _1.delete(:service) })
-      Mrsk::Configuration.new(@deploy.tap { _1.delete(:image) })
-      Mrsk::Configuration.new(@deploy.tap { _1.delete(:registry) })
+  %i[ service image registry ].each do |key|
+    test "#{key} config required" do
+      assert_raise(ArgumentError) do
+        Mrsk::Configuration.new @deploy.tap { _1.delete key }
+      end
+    end
+  end
 
-      Mrsk::Configuration.new(@deploy.tap { _1[:registry].delete("username") })
-      Mrsk::Configuration.new(@deploy.tap { _1[:registry].delete("password") })
+  %w[ username password ].each do |key|
+    test "registry #{key} required" do
+      assert_raise(ArgumentError) do
+        Mrsk::Configuration.new @deploy.tap { _1[:registry].delete key }
+      end
     end
   end
 
@@ -48,7 +55,7 @@ class ConfigurationTest < ActiveSupport::TestCase
 
   test "all hosts" do
     assert_equal [ "1.1.1.1", "1.1.1.2"], @config.all_hosts
-    assert_equal [ "1.1.1.1", "1.1.1.2", "1.1.1.3", "1.1.1.4" ], @config_with_roles.all_hosts
+    assert_equal [ "1.1.1.1", "1.1.1.2", "1.1.1.3" ], @config_with_roles.all_hosts
   end
 
   test "primary web host" do
@@ -62,12 +69,24 @@ class ConfigurationTest < ActiveSupport::TestCase
     @deploy_with_roles[:servers]["workers"]["traefik"] = true
     config = Mrsk::Configuration.new(@deploy_with_roles)
 
-    assert_equal [ "1.1.1.1", "1.1.1.2", "1.1.1.3", "1.1.1.4" ], config.traefik_hosts
+    assert_equal [ "1.1.1.1", "1.1.1.2", "1.1.1.3" ], config.traefik_hosts
   end
 
   test "version" do
-    assert_equal "missing", @config.version
-    assert_equal "123", Mrsk::Configuration.new(@deploy, version: "123").version
+    ENV.delete("VERSION")
+
+    @config.expects(:system).with("git rev-parse").returns(nil)
+    error = assert_raises(RuntimeError) { @config.version}
+    assert_match /no git repository found/, error.message
+
+    @config.expects(:current_commit_hash).returns("git-version")
+    assert_equal "git-version", @config.version
+
+    ENV["VERSION"] = "env-version"
+    assert_equal "env-version", @config.version
+
+    @config.version = "arg-version"
+    assert_equal "arg-version", @config.version
   end
 
   test "repository" do
@@ -89,7 +108,7 @@ class ConfigurationTest < ActiveSupport::TestCase
   end
 
   test "env args" do
-    assert_equal [ "-e", "REDIS_URL=redis://x/y" ], @config.env_args
+    assert_equal [ "-e", "REDIS_URL=\"redis://x/y\"" ], @config.env_args
   end
 
   test "env args with clear and secrets" do
@@ -98,7 +117,7 @@ class ConfigurationTest < ActiveSupport::TestCase
       env: { "clear" => { "PORT" => "3000" }, "secret" => [ "PASSWORD" ] }
     }) })
 
-    assert_equal [ "-e", "PASSWORD=secret123", "-e", "PORT=3000" ], config.env_args
+    assert_equal [ "-e", "PASSWORD=\"secret123\"", "-e", "PORT=\"3000\"" ], config.env_args
     assert config.env_args[1].is_a?(SSHKit::Redaction)
   ensure
     ENV["PASSWORD"] = nil
@@ -109,7 +128,7 @@ class ConfigurationTest < ActiveSupport::TestCase
       env: { "clear" => { "PORT" => "3000" } }
     }) })
 
-    assert_equal [ "-e", "PORT=3000" ], config.env_args
+    assert_equal [ "-e", "PORT=\"3000\"" ], config.env_args
   end
 
   test "env args with only secrets" do
@@ -118,7 +137,7 @@ class ConfigurationTest < ActiveSupport::TestCase
       env: { "secret" => [ "PASSWORD" ] }
     }) })
 
-    assert_equal [ "-e", "PASSWORD=secret123" ], config.env_args
+    assert_equal [ "-e", "PASSWORD=\"secret123\"" ], config.env_args
     assert config.env_args[1].is_a?(SSHKit::Redaction)
   ensure
     ENV["PASSWORD"] = nil
@@ -134,6 +153,39 @@ class ConfigurationTest < ActiveSupport::TestCase
 
   test "valid config" do
     assert @config.valid?
+    assert @config_with_roles.valid?
+  end
+
+  test "hosts required for all roles" do
+    # Empty server list for implied web role
+    assert_raises(ArgumentError) do
+      Mrsk::Configuration.new @deploy.merge(servers: [])
+    end
+
+    # Empty server list
+    assert_raises(ArgumentError) do
+      Mrsk::Configuration.new @deploy.merge(servers: { "web" => [] })
+    end
+
+    # Missing hosts key
+    assert_raises(ArgumentError) do
+      Mrsk::Configuration.new @deploy.merge(servers: { "web" => {} })
+    end
+
+    # Empty hosts list
+    assert_raises(ArgumentError) do
+      Mrsk::Configuration.new @deploy.merge(servers: { "web" => { "hosts" => [] } })
+    end
+
+    # Nil hosts
+    assert_raises(ArgumentError) do
+      Mrsk::Configuration.new @deploy.merge(servers: { "web" => { "hosts" => nil } })
+    end
+
+    # One role with hosts, one without
+    assert_raises(ArgumentError) do
+      Mrsk::Configuration.new @deploy.merge(servers: { "web" => %w[ web ], "workers" => { "hosts" => %w[ ] } })
+    end
   end
 
   test "ssh options" do
@@ -157,18 +209,32 @@ class ConfigurationTest < ActiveSupport::TestCase
     assert_equal ["--volume", "/local/path:/container/path"], @config.volume_args
   end
 
+  test "logging args default" do
+    assert_equal ["--log-opt", "max-size=\"10m\""], @config.logging_args
+  end
+
+  test "logging args with configured options" do
+    config = Mrsk::Configuration.new(@deploy.tap { |c| c.merge!(logging: { "options" => { "max-size" => "100m", "max-file" => 5 } }) })
+    assert_equal ["--log-opt", "max-size=\"100m\"", "--log-opt", "max-file=\"5\""], @config.logging_args
+  end
+
+  test "logging args with configured driver and options" do
+    config = Mrsk::Configuration.new(@deploy.tap { |c| c.merge!(logging: { "driver" => "local", "options" => { "max-size" => "100m", "max-file" => 5 } }) })
+    assert_equal ["--log-driver", "\"local\"", "--log-opt", "max-size=\"100m\"", "--log-opt", "max-file=\"5\""], @config.logging_args
+  end
+
   test "erb evaluation of yml config" do
-    config = Mrsk::Configuration.create_from Pathname.new(File.expand_path("fixtures/deploy.erb.yml", __dir__))
+    config = Mrsk::Configuration.create_from config_file: Pathname.new(File.expand_path("fixtures/deploy.erb.yml", __dir__))
     assert_equal "my-user", config.registry["username"]
   end
 
   test "destination yml config merge" do
     dest_config_file = Pathname.new(File.expand_path("fixtures/deploy_for_dest.yml", __dir__))
 
-    config = Mrsk::Configuration.create_from dest_config_file, destination: "world"
+    config = Mrsk::Configuration.create_from config_file: dest_config_file, destination: "world"
     assert_equal "1.1.1.1", config.all_hosts.first
 
-    config = Mrsk::Configuration.create_from dest_config_file, destination: "mars"
+    config = Mrsk::Configuration.create_from config_file: dest_config_file, destination: "mars"
     assert_equal "1.1.1.3", config.all_hosts.first
   end
 
@@ -176,11 +242,11 @@ class ConfigurationTest < ActiveSupport::TestCase
     dest_config_file = Pathname.new(File.expand_path("fixtures/deploy_for_dest.yml", __dir__))
 
     assert_raises(RuntimeError) do
-      config = Mrsk::Configuration.create_from dest_config_file, destination: "missing"
+      config = Mrsk::Configuration.create_from config_file: dest_config_file, destination: "missing"
     end
   end
 
   test "to_h" do
-    assert_equal({ :roles=>["web"], :hosts=>["1.1.1.1", "1.1.1.2"], :primary_host=>"1.1.1.1", :version=>"missing", :repository=>"dhh/app", :absolute_image=>"dhh/app:missing", :service_with_version=>"app-missing", :env_args=>["-e", "REDIS_URL=redis://x/y"], :ssh_options=>{:user=>"root", :auth_methods=>["publickey"]}, :volume_args=>["--volume", "/local/path:/container/path"] }, @config.to_h)
+    assert_equal({ :roles=>["web"], :hosts=>["1.1.1.1", "1.1.1.2"], :primary_host=>"1.1.1.1", :version=>"missing", :repository=>"dhh/app", :absolute_image=>"dhh/app:missing", :service_with_version=>"app-missing", :env_args=>["-e", "REDIS_URL=\"redis://x/y\""], :ssh_options=>{:user=>"root", :auth_methods=>["publickey"]}, :volume_args=>["--volume", "/local/path:/container/path"], :logging=>["--log-opt", "max-size=\"10m\""], :healthcheck=>{"path"=>"/up", "port"=>3000 }}, @config.to_h)
   end
 end

test/fixtures/deploy_simple.yml

@@ -0,0 +1,8 @@
+service: app
+image: dhh/app
+servers:
+  - "1.1.1.1"
+  - "1.1.1.2"
+registry:
+  username: user
+  password: pw

test/fixtures/deploy_with_accessories.yml

@@ -1,8 +1,12 @@
 service: app
 image: dhh/app
 servers:
-  - 1.1.1.1
-  - 1.1.1.2
+  web:
+    - "1.1.1.1"
+    - "1.1.1.2"
+  workers:
+    - "1.1.1.3"
+    - "1.1.1.4"
 registry:
   username: user
   password: pw
@@ -23,7 +27,10 @@ accessories:
       - data:/var/lib/mysql
   redis:
     image: redis:latest
-    host: 1.1.1.4
+    roles:
+      - web
     port: 6379
     directories:
       - data:/data
+
+readiness_delay: 0

test/fixtures/deploy_with_roles.yml

@@ -5,8 +5,9 @@ servers:
     - 1.1.1.1
     - 1.1.1.2
   workers:
-    - 1.1.1.3
-    - 1.1.1.4
+    hosts:
+      - 1.1.1.3
+      - 1.1.1.4
 env:
   REDIS_URL: redis://x/y
 registry:

test/test_helper.rb

@@ -9,7 +9,18 @@ require "mrsk"
 
 ActiveSupport::LogSubscriber.logger = ActiveSupport::Logger.new(STDOUT) if ENV["VERBOSE"]
 
+# Applies to remote commands only.
 SSHKit.config.backend = SSHKit::Backend::Printer
 
+# Ensure local commands use the printer backend too.
+# See https://github.com/capistrano/sshkit/blob/master/lib/sshkit/dsl.rb#L9
+module SSHKit
+  module DSL
+    def run_locally(&block)
+      SSHKit::Backend::Printer.new(SSHKit::Host.new(:local), &block).run
+    end
+  end
+end
+
 class ActiveSupport::TestCase
 end

test/utils_test.rb

@@ -0,0 +1,39 @@
+require "test_helper"
+
+class UtilsTest < ActiveSupport::TestCase
+  test "argumentize" do
+    assert_equal [ "--label", "foo=\"\\`bar\\`\"", "--label", "baz=\"qux\"", "--label", :quux ], \
+      Mrsk::Utils.argumentize("--label", { foo: "`bar`", baz: "qux", quux: nil })
+  end
+
+  test "argumentize with redacted" do
+    assert_kind_of SSHKit::Redaction, \
+      Mrsk::Utils.argumentize("--label", { foo: "bar" }, redacted: true).last
+  end
+
+  test "argumentize_env_with_secrets" do
+    ENV.expects(:fetch).with("FOO").returns("secret")
+    assert_equal [ "-e", "FOO=\"secret\"", "-e", "BAZ=\"qux\"" ], \
+      Mrsk::Utils.argumentize_env_with_secrets({ "secret" => [ "FOO" ], "clear" => { BAZ: "qux" } })
+  end
+
+  test "optionize" do
+    assert_equal [ "--foo", "\"bar\"", "--baz", "\"qux\"", "--quux" ], \
+      Mrsk::Utils.optionize({ foo: "bar", baz: "qux", quux: true })
+  end
+
+  test "optionize with" do
+    assert_equal [ "--foo=\"bar\"", "--baz=\"qux\"", "--quux" ], \
+      Mrsk::Utils.optionize({ foo: "bar", baz: "qux", quux: true }, with: "=")
+  end
+
+  test "redact" do
+    assert_kind_of SSHKit::Redaction, Mrsk::Utils.redact("secret")
+    assert_equal "secret", Mrsk::Utils.redact("secret")
+  end
+
+  test "escape_shell_value" do
+    assert_equal "\"foo\"", Mrsk::Utils.escape_shell_value("foo")
+    assert_equal "\"\\`foo\\`\"", Mrsk::Utils.escape_shell_value("`foo`")
+  end
+end