chore: add github workflow for image push

Author: iconben

.github/workflows/docker-publish.yml

@@ -0,0 +1,28 @@
+name: Build and Push Docker Image
+
+on:
+  push:
+    tags:
+      - '*'  # Triggers on version tags
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Log in to Docker Hub
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      - name: Build Docker image
+        run: |
+          docker build . -t augwit/wordpress:${{ github.ref }}
+
+      - name: Push Docker image
+        run: |
+          docker push augwit/wordpress:${{ github.ref }}

README.md

@@ -11,7 +11,7 @@ The default port is 80. If you want to support HTTPS, please set the environment
 cert.pem  chain.pem  fullchain.pem  options-ssl-nginx.conf  privkey.pem  README  ssl  ssl-dhparams.pem
 ```
 
-New features might come later. Feel free to visit the repository site on Github: [https://github.com/augwit/wordpress/](https://github.com/augwit/wordpress/)
+New features might come later. 
 
 ## Usage
 Example of docker-compose, using this image and mysql image:
@@ -45,3 +45,11 @@ services:
             - ./mysql/data:/var/lib/mysql
 ```
 
+## Develop
+Feel free to visit the repository site on Github: [https://github.com/augwit/wordpress/](https://github.com/augwit/wordpress/)
+
+Build:
+```
+docker build . -t augwit/wordpress:${tag}
+```
+