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Build from within a git clone by default

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Docker does not respect the .dockerignore file when building from a tar.

Instead by default we'll make a local clone into a tmp directory and
build from there. Subsequent builds will reset the clone to match the
checkout.

Compared to building directly in the repo, we'll have reproducible
builds.

Compared to using a git archive:
1. .dockerignore is respected
2. We'll have faster builds - docker can be smarter about caching the
build context on subsequent builds from a directory

To build from the repo directly, set the build context to "." in the
config.

If there are uncommitted changes, we'll warn about them either being
included or ignored depending on whether we build from the clone.
This commit is contained in:
Donal McBreen
2024-05-10 15:23:43 +01:00
parent 88947b6a7b
commit 307750ff70
15 changed files with 253 additions and 76 deletions
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22
test/commands/builder_test.rb
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@@ -9,7 +9,7 @@ class CommandsBuilderTest < ActiveSupport::TestCase
builder = new_builder_command(builder: { "cache" => { "type" => "gha" } })
assert_equal "multiarch", builder.name
assert_equal \
"git archive --format=tar HEAD | docker buildx build --push --platform linux/amd64,linux/arm64 --builder kamal-app-multiarch -t dhh/app:123 -t dhh/app:latest --cache-to type=gha --cache-from type=gha --label service=\"app\" --file Dockerfile -",
"docker buildx build --push --platform linux/amd64,linux/arm64 --builder kamal-app-multiarch -t dhh/app:123 -t dhh/app:latest --cache-to type=gha --cache-from type=gha --label service=\"app\" --file Dockerfile .",
builder.push.join(" ")
end
@@ -17,7 +17,7 @@ class CommandsBuilderTest < ActiveSupport::TestCase
builder = new_builder_command(builder: { "multiarch" => false })
assert_equal "native", builder.name
assert_equal \
"git archive --format=tar HEAD | 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",
"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
@@ -25,7 +25,7 @@ class CommandsBuilderTest < ActiveSupport::TestCase
builder = new_builder_command(builder: { "multiarch" => false, "cache" => { "type" => "gha" } })
assert_equal "native/cached", builder.name
assert_equal \
"git archive --format=tar HEAD | docker buildx build --push -t dhh/app:123 -t dhh/app:latest --cache-to type=gha --cache-from type=gha --label service=\"app\" --file Dockerfile -",
"docker buildx build --push -t dhh/app:123 -t dhh/app:latest --cache-to type=gha --cache-from type=gha --label service=\"app\" --file Dockerfile .",
builder.push.join(" ")
end
@@ -33,7 +33,7 @@ class CommandsBuilderTest < ActiveSupport::TestCase
builder = new_builder_command(builder: { "local" => {}, "remote" => {}, "cache" => { "type" => "gha" } })
assert_equal "multiarch/remote", builder.name
assert_equal \
"git archive --format=tar HEAD | docker buildx build --push --platform linux/amd64,linux/arm64 --builder kamal-app-multiarch-remote -t dhh/app:123 -t dhh/app:latest --cache-to type=gha --cache-from type=gha --label service=\"app\" --file Dockerfile -",
"docker buildx build --push --platform linux/amd64,linux/arm64 --builder kamal-app-multiarch-remote -t dhh/app:123 -t dhh/app:latest --cache-to type=gha --cache-from type=gha --label service=\"app\" --file Dockerfile .",
builder.push.join(" ")
end
@@ -41,7 +41,7 @@ class CommandsBuilderTest < ActiveSupport::TestCase
builder = new_builder_command(builder: { "local" => { "arch" => "amd64" } })
assert_equal "multiarch", builder.name
assert_equal \
"git archive --format=tar HEAD | docker buildx build --push --platform linux/amd64 --builder kamal-app-multiarch -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --file Dockerfile -",
"docker buildx build --push --platform linux/amd64 --builder kamal-app-multiarch -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --file Dockerfile .",
builder.push.join(" ")
end
@@ -49,7 +49,7 @@ class CommandsBuilderTest < ActiveSupport::TestCase
builder = new_builder_command(builder: { "remote" => { "arch" => "amd64" }, "cache" => { "type" => "gha" } })
assert_equal "native/remote", builder.name
assert_equal \
"git archive --format=tar HEAD | docker buildx build --push --platform linux/amd64 --builder kamal-app-native-remote -t dhh/app:123 -t dhh/app:latest --cache-to type=gha --cache-from type=gha --label service=\"app\" --file Dockerfile -",
"docker buildx build --push --platform linux/amd64 --builder kamal-app-native-remote -t dhh/app:123 -t dhh/app:latest --cache-to type=gha --cache-from type=gha --label service=\"app\" --file Dockerfile .",
builder.push.join(" ")
end
@@ -100,21 +100,21 @@ class CommandsBuilderTest < ActiveSupport::TestCase
test "native push with build args" do
builder = new_builder_command(builder: { "multiarch" => false, "args" => { "a" => 1, "b" => 2 } })
assert_equal \
"git archive --format=tar HEAD | 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",
"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 \
"git archive --format=tar HEAD | docker buildx build --push --platform linux/amd64,linux/arm64 --builder kamal-app-multiarch -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --build-arg a=\"1\" --build-arg b=\"2\" --file Dockerfile -",
"docker buildx build --push --platform linux/amd64,linux/arm64 --builder kamal-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 build secrets" do
builder = new_builder_command(builder: { "multiarch" => false, "secrets" => [ "a", "b" ] })
assert_equal \
"git archive --format=tar HEAD | 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",
"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
@@ -162,4 +162,8 @@ class CommandsBuilderTest < ActiveSupport::TestCase
def new_builder_command(additional_config = {})
Kamal::Commands::Builder.new(Kamal::Configuration.new(@config.merge(additional_config), version: "123"))
end
def build_directory
"#{Dir.tmpdir}/kamal-clones/app/kamal/"
end
end