Merge pull request #75 from sgerrand/dockerize

Add a Docker image definition for the application and a Docker Compose configuration file

Dockerfile

@@ -0,0 +1,7 @@
+FROM alpine:3.7
+RUN apk add --no-cache maven openjdk8
+COPY /. /app/
+WORKDIR /app
+RUN mvn package \
+    && cp Server/src/main/resources/config.properties /app/
+CMD ["java", "-jar", "/app/target/server-1.2a.jar"]

README.md

@@ -4,10 +4,11 @@ In its current state, players can walk around the game universe and collect Biom
 
 ![screenshot from 2017-11-12 13-01-43](https://user-images.githubusercontent.com/7120851/32701793-e5d07e98-c7a9-11e7-9931-f8db7b287994.png)
 
-Wiki: [GitHub](https://github.com/simon987/Much-Assembly-Required/wiki)    
+Wiki: [GitHub](https://github.com/simon987/Much-Assembly-Required/wiki)
 Chat: [Slack](https://join.slack.com/t/muchassemblyrequired/shared_invite/enQtMjY3Mjc1OTUwNjEwLTkyOTIwOTA5OGY4MDVlMGI4NzM5YzlhMWJiMGY1OWE2NjUxODQ1NWQ1YTcxMTA1NGZkYzNjYzMyM2E1ODdmNzg)
 
-# Deploying the server (Ubuntu or other Debian derivative)
+
+# Deploying the server 
 
 Note: You can find the frontend [here](https://github.com/simon987/Much-Assembly-Required)
 
@@ -31,3 +32,22 @@ java -jar server-1.2a.jar
 
 ## Windows
 Coming eventually...
+
+## Docker
+### Requirements  
+
+1. [Docker Compose](https://docs.docker.com/compose/install/#install-compose) (and dependencies)
+
+### Installation
+
+Once Docker and Docker Compose are installed, you can build and start
+this application by running the following command inside this
+application's directory:
+
+`docker-compose up`
+
+This will start MySQL and then build and run this application. It will
+be available via http://localhost.
+
+Note that there is currently no frontend web application serving the
+WebSocket feed served by the `Server` application!

docker-compose.yml

@@ -0,0 +1,21 @@
+version: "2.1"
+services:
+  server:
+    build:
+      context: .
+    command: sh -c "sed -i -e 's#localhost#db#' config.properties && /usr/bin/java -jar /app/target/server-1.2a.jar"
+    depends_on:
+      db:
+        condition: service_healthy
+    ports:
+      - "8887:8887"
+  db:
+    image: mysql
+    healthcheck:
+      test: ["CMD", "mysqladmin" ,"ping", "-umar", "-pmar"]
+    environment:
+      MYSQL_DATABASE: mar
+      MYSQL_PASSWORD: mar
+      MYSQL_RANDOM_ROOT_PASSWORD: "yes"
+      MYSQL_ROOT_PASSWORD: something-secret
+      MYSQL_USER: mar