ci: generate contributors automatically monthly (#3250)

.github/workflows/generate-contributors.yml

@@ -0,0 +1,49 @@
+name: "Generate contributors"
+
+on:
+  schedule:
+    - cron: "0 0 1 * *"
+
+env:
+  PRIMARY_NODE_VERSION: 12
+
+jobs:
+  generate-contributors:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Use Node.js ${{ env.PRIMARY_NODE_VERSION }}
+        uses: actions/setup-node@v2
+        with:
+          node-version: ${{ env.PRIMARY_NODE_VERSION }}
+
+      - name: Get yarn cache directory path
+        id: yarn-cache-dir-path
+        run: echo "::set-output name=dir::$(yarn cache dir)"
+
+      - uses: actions/cache@v2
+        id: yarn-cache # use this to check for `cache-hit` (`steps.yarn-cache.outputs.cache-hit != 'true'`)
+        with:
+          path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
+          key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-yarn-
+
+      - name: Install dependencies
+        run: |
+          yarn --ignore-engines --frozen-lockfile --ignore-scripts
+
+      - name: Generate contributors
+        run: yarn generate:contributors
+
+      - name: Commit files
+        run: |
+          git config --local user.email "actions@github.com"
+          git config --local user.name "Github Actions"
+          git commit -am "chore: update contributors [bot]"
+
+      - name: Push changes
+        uses: ad-m/github-push-action@master
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}