first shot on docker build

.github/workflows/ci.yml

@@ -1,4 +1,4 @@
-name: Go CI
+name: SSM Server CI
 
 on:
   push:
@@ -33,3 +33,29 @@ jobs:
         with:
           name: ssmserver
           path: ./output/ssmserver
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Log in to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          push: true
+          tags: ghcr.io/${{ github.repository_owner }}/ssmserver:latest
+