Add target build stage configuration#396
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Adds a `target` field to `ImageVersion` and `ImageMatrix` config models, allowing users to specify the Docker `--target` flag in `bakery.yaml` for multi-stage builds. The value is threaded through `ImageTarget` to both the sequential build (`docker build`) and bake (`docker buildx bake`) paths, and is omitted from bake JSON output when not set. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Renames the config field from `target` to `buildTarget` on ImageVersion and ImageMatrix to avoid ambiguity with Docker Bake's `target` concept. The ImageTarget property becomes `build_target` (snake_case), while the BakeTarget field remains `target` to match Docker Bake's JSON schema. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Adds buildTarget field to Image so it can be set at the image level and inherited by all versions/matrix. Version-level buildTarget takes precedence over image-level (Version > Matrix > Image). Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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bschwedler
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Summary
target: str | Nonefield toImageVersionandImageMatrixconfig models for specifying the Docker--targetbuild stage flag inbakery.yamltargetfromImageMatrixthroughto_image_versions()so matrix-generated versions inherit the settingtargetthroughImageTargetto both build strategies: sequential (docker build --target) and bake (bake JSONtargetfield, omitted whenNone)target=Nonein expected call signatures; adds new tests covering target propagation and JSON serializationUsage
Test plan
just test)test_build_args*tests updated withtarget=Nonetest_build_args_with_targetverifiestargetis passed todocker.build()TestBakeTargettests verifytargetis propagated and correctly included/excluded from bake JSON🤖 Generated with Claude Code