Fix config path name, add dockerfile, add workflow.

README.md

@@ -109,14 +109,5 @@ docker run --volume ./config:/etc/osc-mqtt-bridge --publish 2223:2223/udp osc-mq
 
 ### Docker compose
 ```yaml
-version: '2.3'
 
-services:
-  postgres:
-    image: grmrgecko/osc-mqtt-bridge:latest
-    restart: unless-stopped
-    volumes:
-      - ./config:/etc/osc-mqtt-bridge
-    ports:
-      - "2223:2223/udp"
 ```