Add Docker Compose support (#205)

README.md

@@ -49,6 +49,12 @@ docker run -d \
 kieranr27/hullcss:main
 ```
 
+Or if you are using Docker Compose
+
+```
+docker compose up -d
+```
+
 Using a tool like [Ouroboros](https://github.com/gmt2001/ouroboros), you can automatically update containers without the need for restarts.
 
 ### 👷 Manual

docker-compose.yml

@@ -0,0 +1,10 @@
+version: '3'
+services:
+  HullCSSDiscordBot:
+    container_name: HullCSSBot
+    image: kieranr27/hullcss:main
+    restart: unless-stopped
+    ports:
+      - 6001:6001
+    env_file:
+      - PATH-TO-ENV-VAR-FILE