ci: support multiple variants

.github/workflows/docker.yaml

@@ -17,6 +17,13 @@ env:
 
 jobs:
   build:
+    strategy:
+      fail-fast: false
+      matrix:
+        variant:
+          - base
+          # - gnome
+
     runs-on: ubuntu-latest
     permissions:
       contents: read
@@ -34,17 +41,17 @@ jobs:
       - name: Install cosign
         if: github.event_name != 'pull_request'
         uses: sigstore/cosign-installer@v3
-          
+
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
-        with:
-          platforms: arm64
+        # with:
+        #   platforms: arm64
 
       # Workaround: https://github.com/docker/build-push-action/issues/461
       - name: Setup Docker buildx
         uses: docker/setup-buildx-action@v3
-        with:
-          platforms: linux/amd64,linux/arm64
+        # with:
+        #   platforms: linux/amd64,linux/arm64
 
       # Login against a Docker registry except on PR
       # https://github.com/docker/login-action
@@ -71,14 +78,15 @@ jobs:
         id: build-and-push
         uses: docker/build-push-action@v5
         with:
-          context: base
-          file: base/Containerfile
+          context: ${{ matrix.variant }}
+          file: ${{ matrix.varian t}}/Containerfile
           push: ${{ github.event_name != 'pull_request' }}
-          tags: ${{ steps.meta.outputs.tags }}
+          # tags: ${{ steps.meta.outputs.tags }}
+          tags: ghcr.io/ultramarine-linux/${{ matrix.variant }}-bootc
           labels: ${{ steps.meta.outputs.labels }}
           cache-from: type=gha
           cache-to: type=gha,mode=max
-          platforms: linux/amd64,linux/arm64
+          # platforms: linux/amd64,linux/arm64
 
       # Sign the resulting Docker image digest except on PRs.
       # This will only write to the public Rekor transparency log when the Docker
@@ -93,4 +101,4 @@ jobs:
           DIGEST: ${{ steps.build-and-push.outputs.digest }}
         # This step uses the identity token to provision an ephemeral certificate
         # against the sigstore community Fulcio instance.
-        run: echo "${TAGS}" | xargs -I {} cosign sign --yes {}@${DIGEST}
+        run: echo "${TAGS}" | xargs -I {} cosign sign --yes {}@${DIGEST}