fix the docker workflow

Signed-off-by: Fredrik Adelöw <freben@gmail.com>

.github/workflows/deploy_docker-image.yml

@@ -7,6 +7,11 @@ jobs:
   build:
     runs-on: ubuntu-latest
 
+    strategy:
+      fail-fast: false
+      matrix:
+        node-version: [16.x]
+
     steps:
       - name: checkout
         uses: actions/checkout@v3
@@ -14,50 +19,16 @@ jobs:
           path: backstage
           ref: v${{ github.event.client_payload.version }}
 
-      - name: setup-node
-        uses: actions/setup-node@v3
-        with:
-          node-version: 16.x
-          registry-url: https://registry.npmjs.org/
-
-      # Beginning of yarn setup, keep in sync between all workflows.
-      # TODO(Rugvip): move this to composite action once all features we use are supported
       - name: use node.js ${{ matrix.node-version }}
         uses: actions/setup-node@v3
         with:
           node-version: ${{ matrix.node-version }}
           registry-url: https://registry.npmjs.org/ # Needed for auth
 
-      # Cache every node_modules folder inside the monorepo
-      - name: cache all node_modules
-        id: cache-modules
-        uses: actions/cache@v3
-        with:
-          path: '**/node_modules'
-          # We use both yarn.lock and package.json as cache keys to ensure that
-          # changes to local monorepo packages bust the cache.
-          key: ${{ runner.os }}-v${{ matrix.node-version }}-node_modules-${{ hashFiles('yarn.lock', '**/package.json') }}
-
-      # If we get a cache hit for node_modules, there's no need to bring in the global
-      # yarn cache or run yarn install, as all dependencies will be installed already.
-
-      - name: find location of global yarn cache
-        id: yarn-cache
-        if: steps.cache-modules.outputs.cache-hit != 'true'
-        run: echo "dir=$(yarn cache dir)" >> $GITHUB_OUTPUT
-
-      - name: cache global yarn cache
-        uses: actions/cache@v3
-        if: steps.cache-modules.outputs.cache-hit != 'true'
-        with:
-          path: ${{ steps.yarn-cache.outputs.dir }}
-          key: ${{ runner.os }}-yarn-${{ hashFiles('yarn.lock') }}
-          restore-keys: |
-            ${{ runner.os }}-yarn-
       - name: yarn install
-        if: steps.cache-modules.outputs.cache-hit != 'true'
-        run: yarn install --immutable
-      # End of yarn setup
+        uses: backstage/actions/yarn-install@v0.5.9
+        with:
+          cache-prefix: ${{ runner.os }}-v${{ matrix.node-version }}
 
       - name: create-app
         run: npx @backstage/create-app
@@ -65,7 +36,7 @@ jobs:
           BACKSTAGE_APP_NAME: example-app
 
       - name: yarn build
-        run: yarn build
+        run: yarn build:backend
         working-directory: ./example-app
 
       - name: Login to GitHub Container Registry