add gha build workflow

.github/workflows/build.yaml

@@ -0,0 +1,33 @@
+name: Build Docker
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    name: Run
+    env:
+      REGISTRY: ghcr.io
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v3
+
+    - name: Log in to GitHub Container Registry
+      uses: docker/login-action@v3
+      with:
+        registry: ${{ env.REGISTRY }}
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Build and push Docker image
+      uses: docker/build-push-action@v6
+      with:
+        context: .
+        push: true
+        tags: ${{ env.REGISTRY }}/${{ github.repository }}:latest