Update compose.yaml (#7)

Author: delihus

demo/compose.yaml

@@ -8,7 +8,7 @@ services:
     tty: true
     environment:
       - ROS_DOMAIN_ID=${ROS_DOMAIN_ID:-0}
-      - RMW_/IMPLEMENTATION=${RMW_IMPLEMENTATION:-rmw_fastrtps_cpp}
+      - RMW_IMPLEMENTATION=${RMW_IMPLEMENTATION:-rmw_cyclonedds_cpp}
     volumes:
       - /dev:/dev
     privileged: true