ci: workflow for building and publishing docker image

Author: Integer-Ctrl

.github/workflows/docker-publish.yml

@@ -0,0 +1,28 @@
+name: Build and push Docker image to DockerHub
+
+on:
+  push:
+    branches: [ "main" ]
+  workflow_dispatch:  # allows manual trigger
+
+jobs:
+  push_to_registry:
+    name: Push Docker image to Docker Hub
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Check out the repo
+        uses: actions/checkout@v3
+
+      - name: Log in to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DBP_DOCKERHUB_CREDENTIAL_USERNAME }}
+          password: ${{ secrets.DBP_DOCKERHUB_CREDENTIAL_TOKEN_PUSHIMAGES }}
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          push: true
+          tags: dbpedia/python-databus-client:latest