add docker compose

compose.yaml

@@ -0,0 +1,11 @@
+version: "1.0"
+services:
+    app:
+        build: .
+        container_name: firefly-discord-bot
+        environment:
+            ENVIRONMENT: ${ENVIRONMENT}
+            TOKEN: ${TOKEN}
+            CHANNEL: ${CHANNEL}
+            CLIENTID: ${CLIENTID}
+            CLIENTSECRET: ${CLIENTSECRET}