Added postgres, mysql and mailhog.

postgres/docker-compose.yml

@@ -0,0 +1,14 @@
+version: '2'
+
+services:
+  mysql:
+    image: postgres:10
+    container_name: postgres
+    restart: always
+    ports:
+      - 5432:5432
+    environment:
+      - POSTGRES_PASSWORD=postgres
+    volumes:
+      - /home/marvin/docker/postgres/data:/var/lib/postgresql/data
+