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A plain `docker build .`, which is how upaas builds, stamped `dev`: `.dockerignore` left out `.git` and the builder declared `ARG VERSION=dev`. `.dockerignore` now sends `.git` and lists no tracked file, which git in the build would count as deleted and mark `-dirty`. `ARG VERSION` has no default. The Makefile takes `VERSION` from the environment with `?=`, so a build arg still wins (`script/docker` keeps passing one); otherwise `git describe` runs in the builder. A new `make version` prints the version, and the builder fails when the context carries `.git` and it comes out empty, `dev` or `unknown`. Model: opus-5-5
55 lines
2.1 KiB
Docker
55 lines
2.1 KiB
Docker
# prettier over the markdown, in a container, so it is never installed
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# on the host. script/fmt-check-markdown builds the fmt-check stage;
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# script/fmt builds fmt-out and takes the formatted files back.
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# node:22-bookworm-slim, 2026-09-05
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FROM node:22-bookworm-slim@sha256:83f487e0a63425e5b4d146fb5e5be574bcbe1b7b843d3ebafdd95eaf7767a7e5 AS nodedeps
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# prettier lives outside /src so that a `COPY . .` of the repo cannot
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# overwrite it, and so that node_modules never appears in the tree
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# prettier is about to walk.
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WORKDIR /tools
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# package.json pins the version and yarn.lock pins the bytes:
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# --frozen-lockfile installs exactly the lockfile's resolution and fails
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# if package.json disagrees with it, so the tool cannot float between
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# runs. yarn is the one in the image above.
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COPY package.json yarn.lock ./
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RUN yarn install --frozen-lockfile --non-interactive --no-progress
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ENV PATH="/tools/node_modules/.bin:${PATH}"
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WORKDIR /src
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# Read-only markdown check. Must match $stage in
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# script/fmt-check-markdown.
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FROM nodedeps AS fmt-check
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COPY . .
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# --config, not discovery: a .prettierrc that failed to arrive would
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# otherwise leave prettier on its defaults, where proseWrap is "preserve"
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# and every wrap this check exists to enforce passes. Missing the file is
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# a hard error instead. --no-editorconfig so that .prettierrc alone sets
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# the style.
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RUN prettier --config .prettierrc --no-editorconfig --check "**/*.md"
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# Write path. Not a check: script/fmt builds this and takes the files.
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FROM nodedeps AS fmt
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COPY . .
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RUN prettier --config .prettierrc --no-editorconfig --write "**/*.md"
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# Only the markdown leaves, with its paths intact, so that the export
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# below cannot put anything else back over the caller's working tree.
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RUN mkdir -p /out && cd /src && \
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find . -name '*.md' -type f -exec cp --parents '{}' /out/ ';'
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# Export target: `docker build --target fmt-out --output type=local`
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# writes /out's tree into a directory on the client, which is how
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# script/fmt gets formatted markdown back without a bind mount.
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# Must match $stage in script/fmt.
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FROM scratch AS fmt-out
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COPY --from=fmt /out/ /
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