add npm cache

.gitea/workflows/make-app.yaml

@@ -60,6 +60,14 @@ jobs:
       # - name: Install Ionic
       #   run: npm install -g @ionic/cli
 
+      - name: Cache npm dependencies
+        uses: actions/cache@v2
+        with:
+          path: '~/.npm'
+          key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
+          restore-keys: |
+            ${{ runner.os }}-node-
+
       - name: Install app dependencies
         run: npm install