Add cache for bazel to prove why bazel rocks

Signed-off-by: Bogdan Drutu <bogdandrutu@gmail.com>

.github/workflows/ci.yml

@@ -87,13 +87,20 @@ jobs:
     - name: run tests
       run: ./ci/do_ci.sh cmake.test_example_plugin
 
-  gcc_48_test:
+  bazel_gcc_48_test:
     name: Legacy Bazel
     runs-on: ubuntu-18.04
     steps:
     - uses: actions/checkout@v2
       with:
         submodules: 'recursive'
+    - name: Mount Bazel Cache
+      uses: actions/cache@v2
+      env:
+        cache-name: bazel_cache
+      with:
+        path: /home/runner/.cache/bazel
+        key: bazel_gcc_48_test
     - name: setup
       run: |
         sudo ./ci/setup_ci_environment.sh
@@ -111,6 +118,13 @@ jobs:
     - uses: actions/checkout@v2
       with:
         submodules: 'recursive'
+    - name: Mount Bazel Cache
+      uses: actions/cache@v2
+      env:
+        cache-name: bazel_cache
+      with:
+        path: /home/runner/.cache/bazel
+        key: bazel_test
     - name: setup
       run: |
         sudo ./ci/setup_cmake.sh
@@ -126,6 +140,13 @@ jobs:
     - uses: actions/checkout@v2
       with:
         submodules: 'recursive'
+    - name: Mount Bazel Cache
+      uses: actions/cache@v2
+      env:
+        cache-name: bazel_cache
+      with:
+        path: /home/runner/.cache/bazel
+        key: bazel_valgrind
     - name: setup
       run: |
         sudo ./ci/setup_cmake.sh
@@ -141,6 +162,13 @@ jobs:
     - uses: actions/checkout@v2
       with:
         submodules: 'recursive'
+    - name: Mount Bazel Cache
+      uses: actions/cache@v2
+      env:
+        cache-name: bazel_cache
+      with:
+        path: /home/runner/.cache/bazel
+        key: bazel_noexcept
     - name: setup
       run: |
         sudo ./ci/setup_cmake.sh
@@ -156,6 +184,13 @@ jobs:
     - uses: actions/checkout@v2
       with:
         submodules: 'recursive'
+    - name: Mount Bazel Cache
+      uses: actions/cache@v2
+      env:
+        cache-name: bazel_cache
+      with:
+        path: /home/runner/.cache/bazel
+        key: bazel_asan
     - name: setup
       run: |
         sudo ./ci/setup_cmake.sh
@@ -171,6 +206,13 @@ jobs:
     - uses: actions/checkout@v2
       with:
         submodules: 'recursive'
+    - name: Mount Bazel Cache
+      uses: actions/cache@v2
+      env:
+        cache-name: bazel_cache
+      with:
+        path: /home/runner/.cache/bazel
+        key: bazel_tsan
     - name: setup
       run: |
         sudo ./ci/setup_cmake.sh
@@ -186,6 +228,13 @@ jobs:
     - uses: actions/checkout@v2
       with:
         submodules: 'recursive'
+    - name: Mount Bazel Cache
+      uses: actions/cache@v2
+      env:
+        cache-name: bazel_cache
+      with:
+        path: /Users/runner/.cache/bazel
+        key: bazel_osx
     - name: run tests
       run: ./ci/do_ci.sh bazel.test
 
@@ -196,6 +245,13 @@ jobs:
     - uses: actions/checkout@v2
       with:
         submodules: 'recursive'
+    - name: Mount Bazel Cache
+      uses: actions/cache@v2
+      env:
+        cache-name: bazel_cache
+      with:
+        path: /home/runner/.cache/bazel
+        key: bazel_benchmark
     - name: setup
       run: |
         sudo ./ci/setup_cmake.sh