BTHLABS-50: Safari Web extension

Co-authored-by: Tomek Wójcik <labs@tomekwojcik.pl>
Co-committed-by: Tomek Wójcik <labs@tomekwojcik.pl>

.gitea/workflows/ci.yaml

@@ -61,14 +61,29 @@ jobs:
           push: false
           load: true
           tags: "docker-hosted.nexus.bthlabs.pl/hotpocket/packages:ci-local"
+      - name: "Build `extension-ci` image"
+        uses: docker/build-push-action@v6
+        with:
+          file: "services/extension/Dockerfile"
+          context: "services/"
+          target: "ci"
+          push: false
+          load: true
+          tags: "docker-hosted.nexus.bthlabs.pl/hotpocket/extension:ci-local"
       - name: "Run `backend` checks"
         run: |
           set -x
           docker compose -f docker-compose.yaml -f docker-compose-ci.yaml run --rm backend-ci inv ci
       - name: "Run `packages` checks"
+        if: always()
         run: |
           set -x
           docker compose -f docker-compose.yaml -f docker-compose-ci.yaml run --rm packages-ci inv ci
+      - name: "Run `extension` checks"
+        if: always()
+        run: |
+          set -x
+          docker compose -f docker-compose.yaml -f docker-compose-ci.yaml run --rm extension-ci inv ci
       - name: "Clean up"
         if: always()
         run: |