Update build_docker.yml

Author: fit2cloud-chenyw

.github/workflows/build_docker.yml

@@ -1,7 +1,7 @@
 # This workflow will do a clean installation of node dependencies, cache/restore them, build the source code and run tests across different versions of node
 # For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-nodejs
 
-name: Node.js CI
+name: build_docker CI
 
 on:
   workflow_dispatch:
@@ -27,15 +27,15 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
-    - name: To frontend
-      run: cd ./frontend
     - name: Use Node.js ${{ matrix.node-version }}
       uses: actions/setup-node@v4
       with:
         node-version: ${{ matrix.node-version }}
         cache: 'npm'
+        cache-dependency-path: frontend/package-lock.json
     - name: Install and build
       run: |
+        cd ./frontend
         npm install
         npm run build
         cp -r ./dist ../backend/