add docker image builder

Author: 3n3a

.github/workflows/build-image.yml

@@ -0,0 +1,42 @@
+on:
+  push:
+    tags:
+      - "v*"
+
+jobs:
+  release-docker:
+    name: release docker image
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      -
+        name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v4
+        with:
+          # list of Docker images to use as base name for tags
+          images: |
+            3n3a/m307
+          # generate Docker tags based on the following events/attributes
+          tags: |
+            type=semver,pattern={{version}}
+            type=sha
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+      -
+        name: Login to DockerHub
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      -
+        name: Build and push
+        uses: docker/build-push-action@v3
+        with:
+          context: .
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=registry,ref=3n3a/m307:latest
+          cache-to: type=inline