Automated docker build

.github/workflows/docker-build.yml

@@ -0,0 +1,24 @@
+name: build
+on:
+  push:
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - uses: docker/login-action@v1
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - uses: docker/login-action@v1
+        if: 0
+        with:
+          username: voidic
+          password: ${{ secrets.DOCKER_HUB_TOKEN }}
+      - uses: docker/setup-qemu-action@v1
+      - uses: docker/setup-buildx-action@v1
+      - name: Build the Docker image
+        run: docker buildx build -t ghcr.io/${{ github.repository_owner }}/strfry:latest --platform linux/amd64 --push .