Fix env name

docker-compose.yml

@@ -8,7 +8,7 @@ services:
     volumes:
       - ./drone:/data
     environment:
-      - DRONE_GOGS_SERVE=${GOGS_URL}
+      - DRONE_GOGS_SERVER=${GOGS_URL}
       - DRONE_RPC_SECRET=${SECRET}
       - DRONE_SERVER_HOST=${HOST}
       - DRONE_SERVER_PROTO=http