implement skeleton of DockerHub ci

Author: Frosty2500

.github/workflows/release.yml

@@ -31,3 +31,44 @@ jobs:
       uses: pypa/gh-action-pypi-publish@release/v1
       with:
         password: ${{ secrets.PYPI_ORG_TOKEN }}
+
+  build-and-push:
+    # This job publishes the server docker image to DockerHub
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: ./server
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@v4
+
+      - name: Extract Docker image metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ vars.DOCKERHUB_USERNAME }}/basyx-python-server
+          tags: |
+            type=semver,pattern={{version}}
+            type=raw,value=latest
+          labels: |
+            org.opencontainers.image.title=BaSyx Python Server
+            org.opencontainers.image.description=Eclipse BaSyx Python SDK - HTTP Server
+            org.opencontainers.image.source=https://github.com/eclipse-basyx/basyx-python-sdk/tree/main/server
+            org.opencontainers.image.licenses=MIT
+
+      - name: Log in to DockerHub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ vars.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Build and Push Docker Image
+        uses: docker/build-push-action@v6
+        with:
+          context: ..
+          file: ./Dockerfile
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+
+