Created Docker workflow

.github/workflows/main.yml

@@ -0,0 +1,30 @@
+name: ci
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Login to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ vars.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      - name: Build and test
+        uses: docker/build-push-action@v6
+        with:
+          target: test
+          load: true
+      - name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          platforms: linux/amd64,linux/arm64/v8
+          push: true
+          target: prod
+          tags: ${{ vars.DOCKER_USERNAME }}/${{ github.event.repository.name }}:latest