github actions to automate building the docker image

.github/workflows/build-and-push.yml

@@ -0,0 +1,38 @@
+name: Publish Docker container
+
+on:
+  push:
+    branches:
+      - main  # or the default branch of your repository
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+    - name: Check out the repo
+      uses: actions/checkout@v3
+
+    - name: Get short SHA
+      id: short-sha
+      run: echo "::set-output name=sha::$(echo $GITHUB_SHA | cut -c1-6)"
+
+    - name: Log in to GitHub Container Registry
+      uses: docker/login-action@v2
+      with:
+        registry: ghcr.io
+        username: ${{ github.repository_owner }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Build and push Docker image
+      uses: docker/build-push-action@v6
+      with:
+        context: .
+        file: ./Dockerfile
+        push: true
+        tags: |
+          ghcr.io/${{ github.repository }}/resourcespace:latest
+          ghcr.io/${{ github.repository }}/resourcespace:${{ steps.short-sha.outputs.sha }}