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The comments said a phase that is not the last stage is built only when --target names it. The canonical Dockerfile's last stage copies from both phases, so a plain build builds them too. The comments now say what --target does in every repository: it builds that phase and the stages it depends on, nothing else. Model: opus-5-5
25 lines
936 B
Bash
Executable File
25 lines
936 B
Bash
Executable File
#!/bin/sh
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# script/test: run the test suite. Testing is a phase of the Dockerfile
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# and this builds that phase alone, on the same terms as script/lint:
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# --target so that only the test phase and the stages it depends on are
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# built, and a new CACHEBUST value because a cached test layer is a test
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# that did not run; unlike --no-cache, it keeps the layers above the ARG
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# CACHEBUST line and the cache mounts. This relies on every stage of the
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# Dockerfile declaring ARG CACHEBUST before every step that lints, tests
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# or compiles; a stage without that line is served from cache on an
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# unchanged tree, with no warning. --output type=cacheonly writes no
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# image, since nothing uses one.
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set -eu
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SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd -P)"
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ROOT="$(cd "$SCRIPT_DIR/.." && pwd -P)"
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main() {
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cd "$ROOT"
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docker build --build-arg CACHEBUST="$(date +%s)-$$" \
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--target test \
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--output type=cacheonly .
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}
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main "$@"
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