create workflow (#4)

.github/workflows/docker-build.yml

@@ -0,0 +1,36 @@
+name: Build and Push Docker Image
+
+on:
+  push:
+    branches:
+      - workflow  # Trigger workflow on push to the main branch
+  pull_request:
+    branches:
+      - main  # Optional: Run the workflow on PRs targeting main
+
+jobs:
+  build-and-push:
+    runs-on: image-builder
+
+    permissions:
+      contents: read
+      packages: write  # Required to push to GitHub Container Registry
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Log in to GitHub Container Registry
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.ACCESS_TOKEN }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: ./Dockerfile
+          push: true
+          tags: ghcr.io/${{ github.repository }}:latest