Update README.md

README.md

@@ -11,4 +11,17 @@ Feel free to explore the **Meshtastic** project on their website: [https://mesht
 git clone https://github.com/mate-dev/mmrelaynode.git
 cd mmrelaynode && git submodule update --init
 docker compose -f "docker-compose.yaml" up -d --build
+```
+
+If modifying scripts, with the containers stopped use these commands to rebuild them:
+
+```
+docker system prune -af
+docker-compose build --no-cache
+docker-compose up -d --force-recreate 
+```
+
+Use the following command to see the output of command_wrapper.py & the MESHTASTIC_COMMAND_X commands:
+```
+docker exec -it mmrelaynode-app cat /home/mesh/app/command_output.txt
 ```