add release.yml workflow

.github/workflows/release.yml

@@ -0,0 +1,27 @@
+name: Build and Release
+
+on:
+  push:
+    tags:
+      - 'v*.*.*'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Build binary
+        run: |
+          mkdir -p release/
+          docker build -t podman-compose-bin -v "$PWD/release:/result" .
+          mv "$PWD/release/podman-compose" "$PWD/release/podman-compose-linux-x86"
+
+      - name: Upload release asset
+        uses: softprops/action-gh-release@v1
+        with:
+          files: ./release/podman-compose-linux-x86
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}