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feat: Introduce a build push --output option

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which controls where the build result is exported.

The default value is "registry" to reflect the current behavior of
`build push`.

Any value provided to this option will be passed to the `buildx build`
command as a `--output=type=<VALUE>` flag.

For example, the following command will push to the local docker image
store:

    kamal build push --output=docker

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This commit is contained in:
Mike Dalessio
2025-01-20 15:57:48 -05:00
parent 5f04e4266b
commit 24e4347c45
4 changed files with 49 additions and 25 deletions
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31
test/cli/build_test.rb
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@@ -26,7 +26,30 @@ class CliBuildTest < CliTestCase
assert_match /Cloning repo into build directory/, output
assert_match /git -C #{Dir.tmpdir}\/kamal-clones\/app-#{pwd_sha} clone #{Dir.pwd}/, output
assert_match /docker --version && docker buildx version/, output
assert_match /docker buildx build --push --platform linux\/amd64 --builder kamal-local-docker-container -t dhh\/app:999 -t dhh\/app:latest --label service="app" --file Dockerfile \. as .*@localhost/, output
assert_match /docker buildx build --output=type=registry --platform linux\/amd64 --builder kamal-local-docker-container -t dhh\/app:999 -t dhh\/app:latest --label service="app" --file Dockerfile \. as .*@localhost/, output
end
end
end
test "push --output=docker" do
with_build_directory do |build_directory|
Kamal::Commands::Hook.any_instance.stubs(:hook_exists?).returns(true)
hook_variables = { version: 999, service_version: "app@999", hosts: "1.1.1.1,1.1.1.2,1.1.1.3,1.1.1.4", command: "build", subcommand: "push" }
SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
.with(:git, "-C", anything, :"rev-parse", :HEAD)
.returns(Kamal::Git.revision)
SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
.with(:git, "-C", anything, :status, "--porcelain")
.returns("")
run_command("push", "--output=docker", "--verbose").tap do |output|
assert_hook_ran "pre-build", output, **hook_variables
assert_match /Cloning repo into build directory/, output
assert_match /git -C #{Dir.tmpdir}\/kamal-clones\/app-#{pwd_sha} clone #{Dir.pwd}/, output
assert_match /docker --version && docker buildx version/, output
assert_match /docker buildx build --output=type=docker --platform linux\/amd64 --builder kamal-local-docker-container -t dhh\/app:999 -t dhh\/app:latest --label service="app" --file Dockerfile \. as .*@localhost/, output
end
end
end
@@ -49,7 +72,7 @@ class CliBuildTest < CliTestCase
SSHKit::Backend::Abstract.any_instance.expects(:execute).with(:git, "-C", build_directory, :submodule, :update, "--init")
SSHKit::Backend::Abstract.any_instance.expects(:execute)
.with(:docker, :buildx, :build, "--push", "--platform", "linux/amd64", "--builder", "kamal-local-docker-container", "-t", "dhh/app:999", "-t", "dhh/app:latest", "--label", "service=\"app\"", "--file", "Dockerfile", ".")
.with(:docker, :buildx, :build, "--output=type=registry", "--platform", "linux/amd64", "--builder", "kamal-local-docker-container", "-t", "dhh/app:999", "-t", "dhh/app:latest", "--label", "service=\"app\"", "--file", "Dockerfile", ".")
SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
.with(:git, "-C", anything, :"rev-parse", :HEAD)
@@ -74,7 +97,7 @@ class CliBuildTest < CliTestCase
assert_no_match /Cloning repo into build directory/, output
assert_hook_ran "pre-build", output, **hook_variables
assert_match /docker --version && docker buildx version/, output
assert_match /docker buildx build --push --platform linux\/amd64 --builder kamal-local-docker-container -t dhh\/app:999 -t dhh\/app:latest --label service="app" --file Dockerfile . as .*@localhost/, output
assert_match /docker buildx build --output=type=registry --platform linux\/amd64 --builder kamal-local-docker-container -t dhh\/app:999 -t dhh\/app:latest --label service="app" --file Dockerfile . as .*@localhost/, output
end
end
@@ -140,7 +163,7 @@ class CliBuildTest < CliTestCase
.returns("")
SSHKit::Backend::Abstract.any_instance.expects(:execute)
.with(:docker, :buildx, :build, "--push", "--platform", "linux/amd64", "--builder", "kamal-local-docker-container", "-t", "dhh/app:999", "-t", "dhh/app:latest", "--label", "service=\"app\"", "--file", "Dockerfile", ".")
.with(:docker, :buildx, :build, "--output=type=registry", "--platform", "linux/amd64", "--builder", "kamal-local-docker-container", "-t", "dhh/app:999", "-t", "dhh/app:latest", "--label", "service=\"app\"", "--file", "Dockerfile", ".")
run_command("push").tap do |output|
assert_match /WARN Missing compatible builder, so creating a new one first/, output