Completes UNB-2296 - GitHub action to auto-commit examples changes to examples-gallery repo

Author: gustavocidornelas

.github/workflows/examples_gallery.yml

@@ -0,0 +1,42 @@
+name: publish-to-examples-gallery
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  changed_files:
+    runs-on: ubuntu-latest
+    outputs:
+      run_validations: ${{ steps.changes.outputs.run_validations }}
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - name: Get changed files
+        id: changes
+        run: |
+          echo "::set-output name=run_validations::$(git diff --name-only --diff-filter=ACMRT ${{ github.event.before }} ${{ github.sha }} examples/ | xargs)"
+  build:
+    runs-on: ubuntu-latest
+    needs: changed_files
+    if: ${{needs.changed_files.outputs.run_validations}}
+    env:
+      USER_EMAIL: Hello
+    steps:
+      - uses: actions/checkout@v2
+      - name: Pushes to another repository
+        id: push_directory
+        uses: cpina/github-action-push-to-another-repository@ssh-deploy-key
+        env:
+          SSH_DEPLOY_KEY: ${{ secrets.SSH_DEPLOY_KEY }}
+        with:
+          source-directory: examples
+          destination-github-username: "unboxai"
+          destination-repository-name: "examples-gallery"
+          user-email: $GITHUB_ACTOR
+          commit-message: ${{ github.event.head_commit.message }}
+          target-branch: main
+      - name: Test get variable exported by push-to-another-repository
+        run: echo $DESTINATION_CLONED_DIRECTORY