feat: ship public ops features and cache docker builds

.gitea/workflows/backend-docker.yml

@@ -163,11 +163,20 @@ jobs:
             exit 1
           fi
 
-      - name: Cleanup docker cache
+      - name: Setup docker buildx
         shell: bash
-        run: docker system prune -af --volumes || true
+        run: |
+          set -euo pipefail
 
-      - name: Build image
+          if docker buildx inspect gitea-builder >/dev/null 2>&1; then
+            docker buildx use gitea-builder
+          else
+            docker buildx create --name gitea-builder --driver docker-container --use
+          fi
+
+          docker buildx inspect --bootstrap
+
+      - name: Build and push image
         shell: bash
         env:
           COMPONENT: ${{ matrix.component }}
@@ -195,27 +204,19 @@ jobs:
             BUILD_ARGS+=(--build-arg "VITE_ADMIN_BASENAME=${ADMIN_VITE_BASENAME}")
           fi
 
-          docker build \
+          docker buildx build \
             --file "${DOCKERFILE}" \
             "${BUILD_ARGS[@]}" \
+            --build-arg BUILDKIT_INLINE_CACHE=1 \
+            --cache-from "type=registry,ref=${IMAGE_BASE}:${TAG_BRANCH}" \
+            --cache-from "type=registry,ref=${IMAGE_BASE}:${TAG_LATEST}" \
+            --cache-to "type=inline" \
             --tag "${IMAGE_BASE}:${TAG_LATEST}" \
             --tag "${IMAGE_BASE}:${TAG_BRANCH}" \
             --tag "${IMAGE_BASE}:${TAG_SHA}" \
+            --push \
             "${CONTEXT_DIR}"
 
-      - name: Push image
-        shell: bash
-        env:
-          IMAGE_BASE: ${{ steps.meta.outputs.image_base }}
-          TAG_LATEST: ${{ steps.meta.outputs.tag_latest }}
-          TAG_BRANCH: ${{ steps.meta.outputs.tag_branch }}
-          TAG_SHA: ${{ steps.meta.outputs.tag_sha }}
-        run: |
-          set -euo pipefail
-          docker push "${IMAGE_BASE}:${TAG_LATEST}"
-          docker push "${IMAGE_BASE}:${TAG_BRANCH}"
-          docker push "${IMAGE_BASE}:${TAG_SHA}"
-
       - name: Output image tags
         shell: bash
         env: