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clawbot c460b0d6a5
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Derive the image version from git; send .git to the build (closes #69)
The canonical documents told every repo to exclude .git from the build
context, default ARG VERSION to dev and never run git describe in a
build stage, so an image built from a clone with no build argument
reported dev. .dockerignore now sends .git. The Dockerfile example in
REPO_POLICIES.md installs git, takes the VERSION build argument when one
is given and otherwise git describe --tags --always, and fails when .git
is present but the version is empty, dev or unknown. The checklists, the
Go docs' Makefile comments, the README, and this repo's Dockerfile and
scripts now say the same.

Model: opus-5-5
2026-10-02 00:49:56 +00:00

60 lines
1.8 KiB
Docker

# Lint phase. The linter is invoked directly rather than through `make
# lint` or `script/lint`, which are themselves a docker build and would
# recurse into a daemon that does not exist in a build step.
#
# node 22-alpine, 2026-02-22
FROM node@sha256:e4bf2a82ad0a4037d28035ae71529873c069b13eb0455466ae0bc13363826e34 AS lint
WORKDIR /app
COPY script/ script/
COPY package.json yarn.lock ./
RUN script/bootstrap
COPY . .
RUN yarn run prettier --check '**/*.md' --tab-width 4 --prose-wrap always
# Test phase, same shape and for the same reason.
#
# node 22-alpine, 2026-02-22
FROM node@sha256:e4bf2a82ad0a4037d28035ae71529873c069b13eb0455466ae0bc13363826e34 AS test
WORKDIR /app
COPY script/ script/
COPY package.json yarn.lock ./
RUN script/bootstrap
COPY . .
RUN echo "No tests defined."
# Development environment, and the last stage: a plain `docker build .`
# names no target and so builds this one. Nothing is wanted from the two
# phases above; the copies are what make BuildKit build them first, so
# this image cannot be produced unless lint and test passed. A stage
# appended after this one would drop all three out of a plain build.
#
# node 22-alpine, 2026-02-22
FROM node@sha256:e4bf2a82ad0a4037d28035ae71529873c069b13eb0455466ae0bc13363826e34
WORKDIR /app
COPY --from=lint /app/package.json /dev/null
COPY --from=test /app/package.json /dev/null
# script/bootstrap installs all prerequisites. Manifests are copied
# first so that layer stays cached until dependencies change.
COPY script/ script/
COPY package.json yarn.lock ./
RUN script/bootstrap
COPY . .
# Nothing here is compiled and a LABEL cannot run git, so the version is
# the VERSION build argument that script/docker and script/cibuild pass;
# a plain `docker build .` leaves it empty.
ARG VERSION
LABEL org.opencontainers.image.version="${VERSION}"