automatically publish docker images with gh actions

.github/workflows/build.yaml

@@ -0,0 +1,39 @@
+name: build
+
+on:
+  push:
+    tags:
+      - '**'
+    branches:
+      - 'main'
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Build and push
+        uses: docker/build-push-action@v3
+        if: startsWith(github.event.ref, 'refs/tags/v')
+        with:
+          context: .
+          push: true
+          tags: ghcr.io/lucat1/statik:${{  github.ref_name }}
+      - name: Build and push
+        uses: docker/build-push-action@v3
+        if: startsWith(github.event.ref, 'refs/tags/v') != true
+        with:
+          context: .
+          push: true
+          tags: ghcr.io/lucat1/statik:latest