Merge pull request docker-archive#660 from crazy-max/gha-init

ci: init github actions

.github/workflows/ci.yml

@@ -0,0 +1,31 @@
+name: ci
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - 'master'
+      - '[0-9]+.[0-9]{2}'
+    tags:
+      - 'v*'
+  pull_request:
+
+jobs:
+  build:
+    runs-on: ubuntu-20.04
+    strategy:
+      fail-fast: false
+      matrix:
+        target:
+          - debian-bullseye
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v3
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+      -
+        name: Build
+        run: |
+          make ${{ matrix.target }}