Allow custom version to be passed in via CLI

lib/mrsk/cli/base.rb

@@ -9,6 +9,8 @@ module Mrsk::Cli
 
     class_option :verbose, type: :boolean, aliases: "-v", desc: "Detailed logging"
 
+    class_option :version, desc: "Run commands against a specific app version"
+
     class_option :primary, type: :boolean, aliases: "-p", desc: "Run commands only on primary host instead of all"
     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)"
@@ -27,6 +29,7 @@ module Mrsk::Cli
           commander.config_file = Pathname.new(File.expand_path(options[:config_file]))
           commander.destination = options[:destination]
           commander.verbose     = options[:verbose]
+          commander.version     = options[:version]
 
           commander.specific_hosts    = options[:hosts]&.split(",")
           commander.specific_roles    = options[:roles]&.split(",")

lib/mrsk/commander.rb

@@ -8,14 +8,17 @@ require "mrsk/commands/traefik"
 require "mrsk/commands/registry"
 
 class Mrsk::Commander
-  attr_accessor :config_file, :destination, :verbose
+  attr_accessor :config_file, :destination, :verbose, :version
 
   def initialize(config_file: nil, destination: nil, verbose: false)
     @config_file, @destination, @verbose = config_file, destination, verbose
   end
 
   def config
-    @config ||= Mrsk::Configuration.create_from(config_file, destination: destination).tap { |config| setup_with(config) }
+    @config ||= \
+      Mrsk::Configuration
+        .create_from(config_file, destination: destination, version: cascading_version)
+        .tap { |config| configure_sshkit_with(config) }
   end
 
   attr_accessor :specific_hosts
@@ -71,8 +74,12 @@ class Mrsk::Commander
   end
 
   private
+    def cascading_version
+      version.presence || ENV["VERSION"] || `git rev-parse HEAD`.strip
+    end
+
     # Lazy setup of SSHKit
-    def setup_with(config)
+    def configure_sshkit_with(config)
       SSHKit::Backend::Netssh.configure { |ssh| ssh.ssh_options = config.ssh_options }
       SSHKit.config.command_map[:docker] = "docker" # No need to use /usr/bin/env, just clogs up the logs
       SSHKit.config.output_verbosity = :debug if verbose

lib/mrsk/configuration.rb

@@ -10,13 +10,13 @@ class Mrsk::Configuration
   delegate :argumentize, to: Mrsk::Utils
 
   class << self
-    def create_from(base_config_file, destination: nil)
+    def create_from(base_config_file, destination: nil, version: "missing")
       new(load_config_file(base_config_file).tap do |config|
         if destination
           config.merge! \
             load_config_file destination_config_file(base_config_file, destination)
         end
-      end)
+      end, version: version)
     end
 
     private
@@ -34,8 +34,9 @@ class Mrsk::Configuration
       end
   end
 
-  def initialize(config, validate: true)
+  def initialize(config, version: "missing", validate: true)
     @config = ActiveSupport::InheritableOptions.new(config)
+    @version = version
     ensure_required_keys_present if validate
   end
 
@@ -62,7 +63,7 @@ class Mrsk::Configuration
 
 
   def version
-    @version ||= ENV["VERSION"] || `git rev-parse HEAD`.strip
+    @version
   end
 
   def repository