Docker-compose setup for Servatrice (#3887)

* Docker compose for servatrice

* Update README.md

* Clean up docker-compose specific configuration

README.md

@@ -141,6 +141,20 @@ to permit connections to the server.
 
 Find more information on how to use Servatrice with Docker in our [wiki](https://github.com/Cockatrice/Cockatrice/wiki/Setting-up-Servatrice#using-docker).
 
+**Docker compose**
+
+There is also a docker-compose file available which will configure and run both a MySQL server and Servatrice. The docker-compose setup scripts can be found in the `servatrice/docker` folder and vary only slightly from the default sql and server .ini files. The setup scripts can either be modified in place, or docker-compose can mount alternative files into the images, as you prefer.
+
+To run Servatrice via docker-compose, first install docker-compose following the [install instructions](https://docs.docker.com/compose/install/). Once installed, run the following from the root of the repository:
+```bash
+docker-compose build    # Build the Servatrice image using the same Dockerfile as above.
+docker-compose up       # Setup and run both the MySQL server and Servatrice.
+```
+
+>Note: Similar to the above Docker setup, this will expose TCP ports 4747 and 4748.
+
+>Note: The first time running the docker-compose setup, the MySQL server will take a little time to run the initial setup scripts. Due to this, the Servatrice instance may fail the first few attempts to connect to the database. Servatrice is set to `restart: always` in the docker-compose.yml, which will allow it to continue attempting to start up. Once the MySQL scripts have completed, Servatrice should then connect automatically on the next attempt.
+
 # License [![GPLv2 License](https://img.shields.io/github/license/Cockatrice/Cockatrice.svg)](https://github.com/Cockatrice/Cockatrice/blob/master/LICENSE)
 
 Cockatrice is free software, licensed under the [GPLv2](https://github.com/Cockatrice/Cockatrice/blob/master/LICENSE).

docker-compose.yml

@@ -0,0 +1,27 @@
+version: '3'
+
+services:
+  mysql:
+    image: mysql
+    environment:
+      - MYSQL_ROOT_PASSWORD=root-password
+      - MYSQL_DATABASE=servatrice
+      - MYSQL_USER=servatrice
+      - MYSQL_PASSWORD=password
+    volumes:
+      - $PWD/servatrice/servatrice.sql:/docker-entrypoint-initdb.d/servatrice.sql
+
+  servatrice:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    image: servatrice
+    depends_on:
+      - mysql
+    ports:
+      - "4747:4747"
+      - "4748:4748"
+    entrypoint: "/bin/bash -c 'sleep 10; servatrice --config /tmp/servatrice.ini --log-to-console'"
+    restart: always
+    volumes:
+      - $PWD/servatrice/docker/servatrice-docker.ini:/tmp/servatrice.ini

servatrice/docker/servatrice-docker.ini

@@ -0,0 +1,7 @@
+[database]
+type=mysql
+prefix=cockatrice
+hostname=mysql
+database=servatrice
+user=servatrice
+password=password