39 lines
1.4 KiB
Ruby
39 lines
1.4 KiB
Ruby
require "active_support/duration"
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require "active_support/core_ext/numeric/time"
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class Kamal::Commands::Prune < Kamal::Commands::Base
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def dangling_images
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docker :image, :prune, "--force", "--filter", "label=service=#{config.service}"
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end
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def tagged_images
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pipe \
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docker(:image, :ls, *service_filter, "--format", "'{{.ID}} {{.Repository}}:{{.Tag}}'"),
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grep("-v -w \"#{active_image_list}\""),
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"while read image tag; do docker rmi $tag; done"
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end
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def app_containers(retain:)
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pipe \
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docker(:ps, "-q", "-a", *service_filter, *stopped_containers_filters),
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"tail -n +#{retain + 1}",
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"while read container_id; do docker rm $container_id; done"
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end
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private
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def stopped_containers_filters
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[ "created", "exited", "dead" ].flat_map { |status| [ "--filter", "status=#{status}" ] }
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end
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def active_image_list
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# Pull the images that are used by any containers
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# Append repo:latest - to avoid deleting the latest tag
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# Append repo:<none> - to avoid deleting dangling images that are in use. Unused dangling images are deleted separately
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"$(docker container ls -a --format '{{.Image}}\\|' --filter label=service=#{config.service} | tr -d '\\n')#{config.latest_image}\\|#{config.repository}:<none>"
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end
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def service_filter
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[ "--filter", "label=service=#{config.service}" ]
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end
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end
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