ok found docs on this - there is another stage for setting up pnpm

Author: fuziontech

.github/workflows/docker-frontend.yaml

@@ -38,16 +38,16 @@ jobs:
           registry: ghcr.io
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
+      - uses: pnpm/action-setup@v2
+        with:
+          version: 6.32.9
       - name: Install Node.js
         uses: actions/setup-node@v4
         with:
           node-version-file: frontend/.node-version
           cache: "pnpm"
           cache-dependency-path: frontend/package-lock.json
 
-      - name: Install pnpm
-        run: npm i -g pnpm
-
       - name: Install dependencies
         run: pnpm i