5402: Generate release.json on image build and release tarball

[turegjorup]

Summary

Both Dockerfiles, infrastructure/build-n-push.sh, and github_build_release.yml now write public/release.json so the client's assets/shared/release-loader.js finds the file at /release.json instead of falling back to defaults. The shape matches the existing docs/release-example.json:

{"releaseTimestamp": 1777459916, "releaseTime": "Wed Apr 29 10:51:56 UTC 2026", "releaseVersion": "3.0.0"}

Mirrors itk-dev#2's approach.

What changed

• infrastructure/display-api-service/Dockerfile — api_app_builder stage gets ARG APP_RELEASE_TIMESTAMP + ARG APP_RELEASE_TIME and a RUN printf … > public/release.json step after the final composer install.
• infrastructure/nginx/Dockerfile — same change in its self-contained api_app_builder stage so the nginx image's public/ (which is what's actually served) carries the file.
• infrastructure/build-n-push.sh — captures RELEASE_TIME="$(date -u)" alongside the existing RELEASE_TIMESTAMP, passes both as build args. Drops the unused APP_RELEASE_VERSION (APP_VERSION covers it).
• .github/workflows/build-images.yml — adds a Set release timestamp step that exports APP_RELEASE_TIMESTAMP and APP_RELEASE_TIME to $GITHUB_ENV, and passes them as build args. Replaces the broken APP_RELEASE_TIMESTAMP=${{ github.run_number }} (which was never a unix timestamp).
• .github/workflows/github_build_release.yml:
  • Inlines the steps from the now-removed .github/Taskfile.yml (only consumer of that file).
  • Adds a Write release.json step before tarballing.
  • Adds the missing Detect pre-release step the workflow was already trying to reference (steps.prerelease.outputs.flag — previously empty). RC tags like 3.0.0-RC1 now publish as GitHub pre-releases, mirroring the flavor: latest=auto rule in build-images.yml.
  • Cleanup step now mirrors .dockerignore minus vendor/ and public/build/ (which the workflow just produced and the tarball needs to ship).
• .github/Taskfile.yml — removed.

Local validation

Built both images from this branch and confirmed release.json is present and correct in both:

$ docker run --rm --entrypoint cat local/display-api-service:rj-test /var/www/html/public/release.json
{"releaseTimestamp": 1777459916, "releaseTime": "Wed Apr 29 10:51:56 UTC 2026", "releaseVersion": "rj-test"}

$ docker run --rm --entrypoint cat local/display-api-service-nginx:rj-test /var/www/html/public/release.json
{"releaseTimestamp": 1777459916, "releaseTime": "Wed Apr 29 10:51:56 UTC 2026", "releaseVersion": "rj-test"}

Test plan

• Push to develop → build-images.yml produces :develop images that contain /release.json with releaseVersion: "develop".
• Tag 3.0.0-RC1 → :3.0.0-RC1 image carries releaseVersion: "3.0.0-RC1"; github_build_release.yml publishes the GitHub Release as a pre-release; :latest is not updated on either side.
• Tag 3.0.0 → :3.0.0 image carries releaseVersion: "3.0.0"; github_build_release.yml publishes a final (non-pre-) GitHub Release; :latest is updated.
• assets/shared/release-loader.js no longer logs Could not find release.json. Returning defaults. in the deployed apps.

🤖 Generated with Claude Code