Add docker build and publish on push

.github/workflows/docker.yml

@@ -0,0 +1,58 @@
+name: docker
+
+on:
+  push:
+    branches: [ master ]
+    tags: [ 'v*' ]
+  pull_request:
+    branches: [ master ]
+
+concurrency:
+  group: ${{ github.ref }}
+  cancel-in-progress: true
+
+env:
+  DOCKER_PUBLISH: true
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+
+      - name: Disable docker publishing if in PR build
+        if: ${{ github.event_name == 'pull_request' }}
+        run: echo "Docker publishing in PR is disabled"
+        env: 
+          DOCKER_PUBLISH: false  
+
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Build and push docker image
+        uses: docker/build-push-action@v3
+        with:
+          context: .
+          file: Dockerfile
+          push: ${{ env.DOCKER_PUBLISH }}
+          tags: okmo/renode:latest
+          cache-from: type=registry,ref=okmo/renode:renodecache
+          cache-to: type=registry,ref=okmo/renode:renodecache,mode=max
+
+      - name: Build and push min renode image
+        uses: docker/build-push-action@v3
+        with:
+          context: .
+          file: Dockerfile.min
+          push: ${{ env.DOCKER_PUBLISH }}
+          tags: okmo/renodemin:latest
+          cache-from: type=registry,ref=okmo/renodemin:renodemincache
+          cache-to: type=registry,ref=okmo/renodemin:renodemincache,mode=max