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dnswatcher/script/docker
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docker: a plain docker build . stamps the git version (closes #210)
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
2026-10-02 01:15:55 +00:00

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#!/bin/sh
# script/docker: build the Docker image tagged with the project name.
# The tag comes from script/projectname.
#
# --no-cache-filter=lint,builder runs the lint stage and the builder
# stage (make test) on every invocation; otherwise an unchanged tree is
# served from the layer cache without linting or querying live DNS.
set -eu
SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd -P)"
ROOT="$(cd "$SCRIPT_DIR/.." && pwd -P)"
main() {
cd "$ROOT"
# Own line: a failing command substitution inside an argument does
# not trip `set -e`, so the inline form degrades silently to an
# empty constant. The VERSION build arg takes precedence over what
# the build would derive from the .git in its context.
version="$(git describe --tags --always --dirty 2>/dev/null || true)"
[ -n "$version" ] || version="unknown"
docker build --no-cache-filter=lint,builder \
--build-arg VERSION="$version" \
-t "$("$SCRIPT_DIR/projectname")" .
}
main "$@"