add gh actions

.github/workflows/main.yml

@@ -0,0 +1,61 @@
+name: Create and publish a Docker image
+
+on:
+  push:
+    branches: ['main']
+  repository_dispatch:
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build-and-push-image:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Log in to the Container registry
+        uses: docker/login-action@v1
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v3
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          
+      - name: Setup Python
+        uses: actions/setup-python@v4.0.0
+        with:
+          python-version: 3.12.0-alpha.3
+
+      - uses: paulhatch/semantic-version@v5.0.2
+        id: vnum
+        with:
+          # The prefix to use to identify tags
+          tag_prefix: ""
+          major_pattern: "(MAJOR)"
+          minor_pattern: "(MINOR)"
+          version_format: "${major}.${minor}.${patch}-${increment}"
+          bump_each_commit: true
+    
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          push: true
+          tags: |
+            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.vnum.outputs.version_tag }}
+            ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}