new file: docker-compose.yml

Official container images at commit-time:
	wordpress, wordpress-cli, mysql 5.7

docker-compose.yml

@@ -0,0 +1,62 @@
+version: '3.6'
+
+services:
+  db:
+     image: mysql:5.7
+     volumes:
+         - ~/wordpress/database:/var/lib/mysql
+     restart: always
+     environment:
+       MYSQL_ROOT_PASSWORD: $(MYSQL_ROOT_PASSWORD)
+       MYSQL_DATABASE: $(MYSQL_DATABASE)
+       MYSQL_USER: $(MYSQL_USER)
+       MYSQL_PASSWORD: $(MYSQL_PASSWORD)
+
+  wordpress:
+    image: wordpress:latest
+    depends_on:
+        - db
+    ports:
+        - 8080:80 # change to 80:80 when the shop is ready to go live
+    restart: always
+    env_file: ".env"
+    environment:
+      WORDPRESS_DB_NAME: ${WORDPRESS_DB_NAME}
+      WORDPRESS_DB_HOST: ${WORDPRESS_DB_HOST}
+      WORDPRESS_DB_USER: ${WORDPRESS_DB_USER}
+      WORDPRESS_DB_PASSWORD: ${WORDPRESS_DB_PASSWORD}
+    volumes:
+        - ~/wordpress/data:/var/www/html
+
+  wordpress-cli:
+    depends_on:
+      - db
+      - wordpress
+    image: wordpress:cli
+    # vstm: This is required to run wordpress-cli with the same
+    # user-id as wordpress. This way there are no permission problems
+    # when running the cli
+    user: '33'
+    # vstm: The sleep 10 is required so that the command is run after
+    # mysql is initialized. Depending on your machine this might take
+    # longer or it can go faster.
+    ##      command: >
+    ##        /bin/sh -c '
+    ##        sleep 10;
+    ##       wp core install --path="/var/www/html" --url="http://localhost:8080" --title="Local Wordpress By Docker" --admin_user=admin --admin_password=supersecretpassword --admin_email=admin@your.site
+    command: >
+      /bin/sh -c '
+      sleep 10;
+      wp user list'
+
+    # vstm: add shared volume
+    volumes:
+          - ~/wordpress/data:/var/www/html
+    # WP CLI needs the environment variables used for the Wordpress image
+    env_file: ".env"
+    environment:
+      WORDPRESS_DB_NAME: ${WORDPRESS_DB_NAME}
+      WORDPRESS_DB_HOST: ${WORDPRESS_DB_HOST}
+      WORDPRESS_DB_USER: ${WORDPRESS_DB_USER}
+      WORDPRESS_DB_PASSWORD: ${WORDPRESS_DB_PASSWORD}
+