Purge flag not working due to missing variable
Describe the bug
start_ocean.sh script does not properly purge.
See line 263 with eval docker-compose --project-name=$PROJECT_NAME "$COMPOSE_FILES" -f "${NODE_COMPOSE_FILE}" down
NODE_COMPOSE_FILE is not defined anywhere, which yields null after -f, which breaks that command
To Reproduce Steps to reproduce the behavior: Try to run the script with all options, then stop and rerun with --purge
Expected behavior I would expect this flag to remove all containers running in the project
Screenshots

Desktop (please complete the following information):
- OS: Windows (but using docker dev environment, so this is running inside a linux vm)
- Browser Edge
Not sure where NODE_COMPOSE_FILE is, or where it is expected to come from, but assuming it is extraneous, then this change solves the issue:
eval docker-compose --project-name=$PROJECT_NAME $COMPOSE_FILES down
Happy to submit a pr on this
also worth noting that lines 265 and 266 seem unnecessary as well, not sure where those would be defined based on anything else in this file
265: docker network rm ${PROJECT_NAME}_default || true
266: docker network rm ${PROJECT_NAME}_backend || true
Thanks for opening this issue :) It would be great if you can open a PR
Happy to, I will try to get my local fixes pushed to a fork in the next day or so
@AnaLoznianu, open pr on this: https://github.com/oceanprotocol/barge/pull/327