Add wordpress-mysql sample

Signed-off-by: Anca Iordache <anca.iordache@docker.com>

wordpress-mysql/README.md

@@ -0,0 +1,64 @@
+## Wordpress with MySQL
+This example defines one of the basic setups for Wordpress. More details on how this works can be found on the official [wordpress image page](https://hub.docker.com/_/wordpress).
+
+
+Project structure:
+```
+.
+├── docker-compose.yaml
+└── README.md
+```
+
+[_docker-compose.yaml_](docker-compose.yaml)
+```
+services:
+  db:
+    image: mysql:8.0.19
+    ...
+  wordpress:
+    image: wordpress:latest
+    ports:
+      - 80:80
+    restart: always
+    ...
+```
+
+When deploying this setup, docker-compose maps the wordpress container port 80 to
+port 80 of the host as specified in the compose file.
+
+## Deploy with docker-compose
+
+```
+$ docker-compose up -d
+Creating network "wordpress-mysql_default" with the default driver
+Creating volume "wordpress-mysql_db_data" with default driver
+...
+Creating wordpress-mysql_db_1        ... done
+Creating wordpress-mysql_wordpress_1 ... done
+```
+
+
+## Expected result
+
+Check containers are running and the port mapping:
+```
+$ docker ps
+CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                 NAMES
+5fbb4181a069        wordpress:latest    "docker-entrypoint.s…"   35 seconds ago      Up 34 seconds       0.0.0.0:80->80/tcp    wordpress-mysql_wordpress_1
+e0884a8d444d        mysql:8.0.19        "docker-entrypoint.s…"   35 seconds ago      Up 34 seconds       3306/tcp, 33060/tcp   wordpress-mysql_db_1
+```
+
+Navigate to `http://localhost:80` in your web browser to access Wordpress.
+
+![page](output.jpg)
+
+Stop and remove the containers
+
+```
+$ docker-compose down
+```
+
+To remove all Gitea data, delete the named volumes by passing the `-v` parameter:
+```
+$ docker-compose down -v
+```

wordpress-mysql/docker-compose.yaml

@@ -0,0 +1,29 @@
+version: '3.7'
+services:
+  db:
+    image: mysql:8.0.19
+    command: '--default-authentication-plugin=mysql_native_password'
+    restart: always
+    volumes:
+      - db_data:/var/lib/mysql
+    restart: always
+    environment:
+      - MYSQL_ROOT_PASSWORD=somewordpress
+      - MYSQL_DATABASE=wordpress
+      - MYSQL_USER=wordpress
+      - MYSQL_PASSWORD=wordpress
+  wordpress:
+    image: wordpress:latest
+    ports:
+      - 80:80
+    restart: always
+    environment:
+      - WORDPRESS_DB_HOST=db
+      - WORDPRESS_DB_USER=wordpress
+      - WORDPRESS_DB_PASSWORD=wordpress
+      - WORDPRESS_DB_NAME=wordpress
+volumes:
+  db_data:
+
+  
+