CI: Run packpack for Buster on GitHub Actions

.github/workflows/create-packages.yml

@@ -0,0 +1,29 @@
+name: Create packages
+
+on:
+  push:
+    branches:
+      - '*'
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  package:
+    strategy:
+      matrix:
+        os_dist:
+          - os: debian
+            dist: buster
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          submodules: recursive
+      - name: Run packpack
+        env:
+          SMPFLAGS: -j4
+          OS: ${{ matrix.os_dist.os }}
+          DIST: ${{ matrix.os_dist.dist }}
+          DOCKER_REPO: iconzm/packpack
+        run: utils/packpack/startpackpack.sh