Remove unnecessary steps in workflow

.github/workflows/deploy.yml

@@ -11,26 +11,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - name: Install dependencies
-        run: npm ci
-
-      - name: Check format (prettier)
-        run: npm run format-check
-
-      - name: Lint (eslint)
-        run: npm run lint-check
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v1
-      # Build docker image
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v1
-      - name: Cache Docker layers
-        uses: actions/cache@v2
-        with:
-            path: /tmp/.buildx-cache
-            key: ${{ runner.os }}-buildx-${{ github.sha }}
-            restore-keys: |
-                ${{ runner.os }}-buildx-
       # Login
       - name: Login to Docker registry
         uses: docker/login-action@v1