Donal McBreen 6892abb4be Config the number of containers to keep
By default we keep 5 containers around for rollback. The containers
don't take much space, but the images for them can.

Make the number of containers to retain configurable, either in the
config with the `retain_containers` setting on the command line
with the `--retain` option.
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Kamal: Deploy web apps anywhere

From bare metal to cloud VMs, deploy web apps anywhere with zero downtime. Kamal has the dynamic reverse-proxy Traefik hold requests while a new app container is started and the old one is stopped. Works seamlessly across multiple hosts, using SSHKit to execute commands. Originally built for Rails apps, Kamal will work with any type of web app that can be containerized with Docker.

➡️ See kamal-deploy.org for documentation on installation, configuration, and commands.

Contributing to the documentation

Please help us improve Kamal's documentation on the the basecamp/kamal-site repository.

License

Kamal is released under the MIT License.

Description
Deploy web apps anywhere.
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