[chore] Execute react native android build on CI (open-telemetry#3164)

* [chore] Execute react native android build on CI

* pin gh actions

* pin github action

* fix build configuration

Author: Kielek

.github/workflows/checks.yml

@@ -84,6 +84,25 @@ jobs:
       - name: run checklicense
         run: make checklicense
 
+  check-react-native-changes:
+    runs-on: ubuntu-latest
+    outputs:
+      should_build: ${{ steps.filter.outputs.react_native }}
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: dorny/paths-filter@v3
+        id: filter
+        with:
+          filters: |
+            react_native:
+              - 'src/react-native-app/**'
+              - '.github/workflows/**'
+
+  react-native-android:
+    needs: check-react-native-changes
+    if: needs.check-react-native-changes.outputs.should_build == 'true'
+    uses: ./.github/workflows/react-native-build.yml
+
   build-test:
     needs: [
       build_images,
@@ -92,7 +111,8 @@ jobs:
       misspell,
       checklinks,
       sanity,
-      checklicense
+      checklicense,
+      react-native-android
     ]
     if: always() && !cancelled()
     runs-on: ubuntu-latest

.github/workflows/react-native-build.yml

@@ -0,0 +1,31 @@
+# Copyright The OpenTelemetry Authors
+# SPDX-License-Identifier: Apache-2.0
+
+on:
+  workflow_call:
+
+permissions:
+  contents: read
+
+jobs:
+  build-android:
+    name: Build Android APK
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@4d04d5d9486b7bd6fa91e7baf45bbb4f8b9deedd # v4.0.0
+
+      - name: Build Android APK
+        run: make build-react-native-android
+
+      - name: Verify APK was created
+        run: |
+          if [ ! -f reactnativeapp.apk ]; then
+            echo "APK build failed"
+            exit 1
+          fi
+          echo "APK size: $(du -h reactnativeapp.apk | cut -f1)"