ci: cache dependencies and Eslint

* GitHub now stores a cache of node_modules, running npm ci only if package-lock.json changes
* Eslint cache is now also stored

Author: xflord

.github/workflows/build.yml

@@ -12,16 +12,29 @@ jobs:
         with:
           node-version: 16
       - name: Cache node modules
+        id: cache-npm
         uses: actions/cache@v3
+        env:
+          cache-name: cache-node-modules
         with:
-          path: ~/.npm
-          key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
+          path: ./node_modules
+          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/package-lock.json') }}
           restore-keys: |
-            ${{ runner.os }}-node-
-      - name: Install dependencies and build
-        run: |
-          npm ci
-          npm run build
+            ${{ runner.os }}-build-${{ env.cache-name }}-
+            ${{ runner.os }}-build-
+            ${{ runner.os }}-
+      - name: Cache Eslint
+        uses: actions/cache@v3
+        with:
+          path: ./.eslintcache
+          key: eslintcache-${{github.sha}}
+          restore-keys: |
+            eslintcache-
+      - name: Install Dependencies
+        if: steps.cache-npm.outputs.cache-hit != 'true'
+        run: npm ci
+      - name: Build
+        run: npm run build
       - name: Run Prettier
         run: npm run format:check
       - name: Run ESLint

package.json

@@ -11,7 +11,7 @@
     "start": "ng serve",
     "build": "ng build",
     "test": "ng test",
-    "lint": "nx run-many --all --target=lint",
+    "lint": "nx run-many --all --target=lint --cache",
     "e2e": "ng e2e admin-gui-e2e --watch",
     "affected:apps": "nx affected:apps",
     "affected:libs": "nx affected:libs",