Add docker-compose.yml and a gitignore for ignoring the data folder

.gitignore

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+.data

docker-compose.yml

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+version: '2'
+services:
+  db:
+    image: mysql:5.7
+    volumes:
+      - "./.data/db:/var/lib/mysql"
+    restart: always
+    environment:
+      MYSQL_ROOT_PASSWORD: farmos 
+      MYSQL_DATABASE: farmos 
+      MYSQL_USER: farmos 
+      MYSQL_PASSWORD: farmos 
+
+  farmos:
+    depends_on:
+      - db
+    image: rjsteinert/farmos:latest
+    links:
+      - db
+    ports:
+      - "80:80"
+    restart: always
+    environment:
+      MYSQL_HOST: db:3306
+      MYSQL_ROOT_PASSWORD: farmos 
+      MYSQL_DATABASE: farmos 
+      MYSQL_USER: farmos 
+      MYSQL_PASSWORD: farmos