From 60b2347c9172ad7d5379488c7760be78c12e9a38 Mon Sep 17 00:00:00 2001
From: Frederic Cabassut <cabassut.frederic@gmail.com>
Date: Thu, 5 Mar 2026 23:19:12 +0100
Subject: [PATCH] feat: push Docker image to GitHub Container Registry on
 release

Replace generic registry secrets with ghcr.io using the built-in
GITHUB_TOKEN. Use docker/metadata-action for automatic semver tagging.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---
 .github/workflows/release.yml | 30 ++++++++++++++++--------------
 CLAUDE.md                     |  2 +-
 2 files changed, 17 insertions(+), 15 deletions(-)

diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 1308533..dc0c5ec 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -20,31 +20,33 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Extract version from tag
-        id: version
-        run: echo "VERSION=${GITHUB_REF#refs/tags/}" >> $GITHUB_OUTPUT
+      - name: Extract metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ghcr.io/${{ github.repository }}
+          tags: |
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=raw,value=latest
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
 
-      - name: Login to Container Registry
-        if: env.REGISTRY_URL != ''
+      - name: Login to GitHub Container Registry
         uses: docker/login-action@v3
         with:
-          registry: ${{ secrets.REGISTRY_URL }}
-          username: ${{ secrets.REGISTRY_USER }}
-          password: ${{ secrets.REGISTRY_TOKEN }}
-        env:
-          REGISTRY_URL: ${{ secrets.REGISTRY_URL }}
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Build and push Docker image
         uses: docker/build-push-action@v6
         with:
           context: .
-          push: ${{ secrets.REGISTRY_URL != '' }}
-          tags: |
-            ${{ secrets.REGISTRY_URL && format('{0}/crumbs:{1}', secrets.REGISTRY_URL, steps.version.outputs.VERSION) || '' }}
-            ${{ secrets.REGISTRY_URL && format('{0}/crumbs:latest', secrets.REGISTRY_URL) || '' }}
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
           cache-from: type=gha
           cache-to: type=gha,mode=max
 
diff --git a/CLAUDE.md b/CLAUDE.md
index f60833b..3760b39 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -80,7 +80,7 @@ GitHub Actions with two workflows:
 5. **Docker Build** — validates the Docker image builds (depends on step 3)
 
 **Release** (`.github/workflows/release.yml`) — runs on `v*` tags:
-- Runs full CI pipeline, then builds + pushes Docker image to configured registry
+- Runs full CI pipeline, then builds + pushes Docker image to `ghcr.io` (GitHub Container Registry)
 - Creates a GitHub Release with auto-generated notes
 
 **Docker**: Multi-stage Dockerfile (node:22-slim), exposes port 3000, persists data to `/data` volume.