Add workflow to automatically build for npm changes

Signed-off-by: Luca Comellini <[email protected]>

.github/workflows/dependabot-build.yml

@@ -0,0 +1,51 @@
+name: Run build for dependabot PRs
+
+on:
+  pull_request:
+    types: [opened, synchronize]
+
+permissions:
+  contents: write
+  pull-requests: read
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  build:
+    if: ${{ github.actor == 'dependabot[bot]' }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Fetch Dependabot metadata
+        id: dependabot-metadata
+        uses: dependabot/fetch-metadata@v1
+
+      - uses: actions/checkout@v3
+        if: ${{ steps.dependabot-metadata.outputs.package-ecosystem == 'npm_and_yarn' }}
+        with:
+          ref: ${{ github.head_ref }}
+          token: ${{ secrets.COMMIT_PAT }}
+
+      - name: Set up Node.js
+        if: ${{ steps.dependabot-metadata.outputs.package-ecosystem == 'npm_and_yarn' }}
+        uses: actions/setup-node@v3
+        with:
+          node-version: 16.x
+
+      - name: Install dependencies
+        if: ${{ steps.dependabot-metadata.outputs.package-ecosystem == 'npm_and_yarn' }}
+        run: npm ci
+
+      - name: Run build
+        if: ${{ steps.dependabot-metadata.outputs.package-ecosystem == 'npm_and_yarn' }}
+        run: |
+          npm run build
+          npm run package
+
+      - name: Commit changes
+        if: ${{ steps.dependabot-metadata.outputs.package-ecosystem == 'npm_and_yarn' }}
+        id: commit
+        uses: stefanzweifel/git-auto-commit-action@v4
+        with:
+          commit_message: "Update dist/ after build"