ci: Add GitHub Container Registry (ghcr.io) publishing#1020
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Replace single-branch sync with the canonical Model B + auto-regen pattern from the ghcr-fork-mirror skill (v1.1.0): - sync-upstream.yml now rebases main onto upstream, then regenerates dev from scratch as `main + cherry-pick of every open PR from intarweb to glanceapp/glance`. PR glanceapp#1020 (feat/add-ghcr-publishing) is picked up automatically on each run. - FORK_INFO.md reflects Model B and explicitly documents the goreleaser deviation: dev exists on glance for documentation/policy uniformity but no build pipeline fires from it. `:latest` continues to come from the fork-publish mirror of upstream's goreleaser-built glanceapp/glance:latest (release-tracking, not HEAD-tracking). Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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Summary
This PR adds GitHub Container Registry (ghcr.io) as an additional publishing target alongside Docker Hub.
Refs #969
Motivation
Docker Hub's rate limiting (100 pulls/6hrs anonymous, 200 free) increasingly impacts CI/CD and self-hosted infrastructure. ghcr.io provides no rate limits for public images, a unified code+containers ecosystem, needs no extra secrets (uses the existing GITHUB_TOKEN), and reuses the same build — just an additional registry target.
Changes
.github/workflows/release.yaml:packages: writeto the existing top-levelpermissions:block (keptcontents: write).docker/login-action@v3,registry: ghcr.io,username: ${{ github.actor }},password: ${{ secrets.GITHUB_TOKEN }}) immediately after the existing Docker Hub login. The Docker Hub login has noif:guard (this workflow only triggers onv*tag pushes), so the ghcr login mirrors that with no guard..goreleaser.yaml:ghcr.io/{{ .ProjectName }}image template to each per-archdockers:entry (amd64, arm64, armv7), alongside the existing Docker Hub image templates, via new YAML anchors. Existing image templates, build flags, platforms, and Dockerfile are unchanged.docker_manifests:entries mirroring the existing ones —ghcr.io/{{ .ProjectName }}:{{ .Tag }}andghcr.io/{{ .ProjectName }}:latest(skip_push: auto) — referencing the new per-arch ghcr anchors. The existing Docker Hub manifests are untouched.The image name
glanceapp/glanceis already lowercase, so no case normalization was needed. The full multi-arch (amd64/arm64/armv7) tag strategy is mirrored exactly.Backward Compatibility
Fully backward compatible — Docker Hub publishing is unchanged; this only adds an additional registry target.
Testing
🤖 Generated with Claude Code
🔧 One-time maintainer step: make the GHCR package public
Heads-up for maintainers: the first time this workflow publishes to
ghcr.io/glanceapp/glance, GitHub creates the package as private by default. To let usersdocker pullit without authentication, a maintainer needs to set its visibility to Public once:It's a one-time action — subsequent pushes inherit the setting. (Flagged by an automated reviewer; surfacing it here so the rollout is smooth.)