add nativelink example to github actions (#930)

Summary: Pull Request resolved: #930

Differential Revision: D74001305

Author: Yury Samkevich

.github/actions/build_example_nativelink/action.yml

@@ -9,7 +9,11 @@ runs:
   - name: Build examples/remote_execution/nativelink directory using remote execution
     run: |-
       {
-      echo "[buck2_re_client]
+      echo "[buck2]
+      digest_algorithms = SHA256
+      execution_platforms = root//platforms:platforms
+
+      [buck2_re_client]
       engine_address       = grpc://scheduler-buck2.build-faster.nativelink.net:443
       action_cache_address = grpc://cas-buck2.build-faster.nativelink.net:443
       cas_address          = grpc://cas-buck2.build-faster.nativelink.net:443
@@ -18,7 +22,11 @@ runs:
       instance_name = main"
       } > examples/remote_execution/nativelink/.buckconfig.local
       cd examples/remote_execution/nativelink
-      $RUNNER_TEMP/artifacts/buck2 build //...
+      if [[ -z ${NATIVELINK_HEADER_RW_KEY:+x} ]]; then
+        echo "Missing NativeLink Api key." >&2
+      else
+        $RUNNER_TEMP/artifacts/buck2 build //...
+      fi
     env:
       NATIVELINK_HEADER_RW_KEY: ${{ inputs.NATIVELINK_HEADER_RW_KEY_SECRET }}
     shell: bash

.github/workflows/build-and-test.yml

@@ -73,6 +73,9 @@ jobs:
     - uses: ./.github/actions/build_example_persistent_worker
       with:
         buildbuddyApiKey: ${{ secrets.BUILDBUDDY_API_KEY }}
+    - uses: ./.github/actions/build_example_nativelink
+      with:
+        NATIVELINK_HEADER_RW_KEY_SECRET: ${{ secrets.NATIVELINK_HEADER_RW_KEY_SECRET }}
     - uses: ./.github/actions/setup_reindeer
     - uses: ./.github/actions/build_bootstrap
   windows-build-examples:

examples/remote_execution/nativelink/platforms/defs.bzl

@@ -21,7 +21,7 @@ def _platforms(ctx):
             # Set those up based on what workers you've registered with NativeLink.
             remote_execution_properties = {
                 "OSFamily": "linux",
-                "container-image": "docker://buck2-github:latest",
+                "container-image": "docker://nativelink-toolchain-buck2:latest",
             },
             remote_execution_use_case = "buck2-default",
             remote_output_paths = "output_paths",