ci: enable cache in bazel build job

Author: danctorres

.github/workflows/bazel_build.yml

@@ -13,9 +13,21 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - name: Checkout code
-      uses: actions/checkout@v3
+      - name: Cache bazel
+        uses: actions/cache@v2
+        env:
+          cache-name: bazel-cache
+        with:
+          path: |
+            ~/.cache/bazelisk
+            ~/.cache/bazel
+          key: ${{ runner.os }}-${{ env.cache-name }}-${{ github.ref }}
+          restore-keys: |
+            ${{ runner.os }}-${{ env.cache-name }}-development
 
-    - name: Run Bazel build
-      run: |
-        bazel build //...
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Run Bazel build
+        run: |
+          bazel build //...