ci: fix docker workflow - registry cache, build-push-action@v6, REGISTRY_TOKEN

- Replace type=gha cache (disabled on this runner) with type=registry cache
- Upgrade docker/build-push-action v5 → v6 (matches whisper-rtx2080 pattern)
- Switch auth to REGISTRY_USERNAME/REGISTRY_TOKEN repo secrets
- Split into two parallel jobs (build-cpu / build-gpu) for visibility
- Use github.ref conditions (Gitea compat) instead of is_default_branch

.gitea/workflows/docker.yml

@@ -9,77 +9,94 @@ on:
       - 'v*.*.*'
   workflow_dispatch:
 
+env:
+  REGISTRY: git.sal.giize.com
+  IMAGE_NAME: mozempk/trueref
+
 jobs:
-  docker:
-    name: Build and push
+  # ── CPU image ──────────────────────────────────────────────────────────────
+  build-cpu:
+    name: Build and push CPU image
     runs-on: ubuntu-latest
 
     steps:
       - name: Checkout
         uses: actions/checkout@v4
 
-      # Set up Docker Buildx for efficient layer caching.
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
 
-      # Log in to the Gitea container registry.
-      # The built-in GITEA_TOKEN is injected automatically by Gitea Actions and
-      # has write access to packages in the same organisation/user namespace.
       - name: Log in to Gitea registry
         uses: docker/login-action@v3
         with:
-          registry: git.sal.giize.com
-          username: ${{ gitea.actor }}
-          password: ${{ secrets.GITEA_TOKEN }}
+          registry: ${{ env.REGISTRY }}
+          username: ${{ secrets.REGISTRY_USERNAME }}
+          password: ${{ secrets.REGISTRY_TOKEN }}
 
-      # ── Determine tags ───────────────────────────────────────────────────
       # On a version tag (v1.2.3):  latest, cpu, cpu-1.2.3, 1.2.3
       # On branch push (main/master): latest, cpu
       - name: Docker metadata (CPU)
-        id: meta_cpu
+        id: meta
         uses: docker/metadata-action@v5
         with:
-          images: git.sal.giize.com/mozempk/trueref
-          flavor: |
-            latest=auto
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
           tags: |
-            type=raw,value=latest,enable={{is_default_branch}}
-            type=raw,value=cpu,enable={{is_default_branch}}
+            type=raw,value=latest,enable=${{ github.ref == 'refs/heads/main' || github.ref == 'refs/heads/master' }}
+            type=raw,value=cpu,enable=${{ github.ref == 'refs/heads/main' || github.ref == 'refs/heads/master' }}
             type=semver,pattern={{version}},prefix=cpu-
             type=semver,pattern={{version}}
 
-      - name: Docker metadata (GPU)
-        id: meta_gpu
-        uses: docker/metadata-action@v5
-        with:
-          images: git.sal.giize.com/mozempk/trueref
-          flavor: |
-            latest=false
-          tags: |
-            type=raw,value=gpu,enable={{is_default_branch}}
-            type=semver,pattern={{version}},prefix=gpu-
-
-      # ── CPU image ────────────────────────────────────────────────────────
       - name: Build and push CPU image
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: .
           file: Dockerfile
-          push: true
-          tags: ${{ steps.meta_cpu.outputs.tags }}
-          labels: ${{ steps.meta_cpu.outputs.labels }}
-          cache-from: type=gha,scope=cpu
-          cache-to: type=gha,mode=max,scope=cpu
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          # Registry-backed layer cache — works without the GHA cache service.
+          cache-from: type=registry,ref=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:buildcache-cpu
+          cache-to: type=registry,ref=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:buildcache-cpu,mode=max
+          platforms: linux/amd64
+
+  # ── GPU image ──────────────────────────────────────────────────────────────
+  build-gpu:
+    name: Build and push GPU image
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to Gitea registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ secrets.REGISTRY_USERNAME }}
+          password: ${{ secrets.REGISTRY_TOKEN }}
+
+      # On a version tag (v1.2.3): gpu, gpu-1.2.3
+      # On branch push (main/master): gpu
+      - name: Docker metadata (GPU)
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=raw,value=gpu,enable=${{ github.ref == 'refs/heads/main' || github.ref == 'refs/heads/master' }}
+            type=semver,pattern={{version}},prefix=gpu-
 
-      # ── GPU image ────────────────────────────────────────────────────────
-      # Built from the same source; only the runtime base image differs.
       - name: Build and push GPU image
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: .
           file: Dockerfile.gpu
-          push: true
-          tags: ${{ steps.meta_gpu.outputs.tags }}
-          labels: ${{ steps.meta_gpu.outputs.labels }}
-          cache-from: type=gha,scope=gpu
-          cache-to: type=gha,mode=max,scope=gpu
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=registry,ref=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:buildcache-gpu
+          cache-to: type=registry,ref=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:buildcache-gpu,mode=max
+          platforms: linux/amd64