Asking for help from docker experts re custom extensions issue

Thanks
did check docker-compose.yml and Dockerfile after finding this post.

Exactly as I have just found

In the above post I ahve just found JonL suggests a fix which @George later reports as "improved"
My dockercompose.yml does have that recommendation added

'../../../extensions:/opt/node_app/extensions'

but still not working:

services:
  web:
    volumes:
      - '../../../app:/opt/node_app/app'
      - '../../../lib:/opt/node_app/lib'
      - '../../../views:/opt/node_app/views'
      - '../../../public:/opt/node_app/public'
      - '../../../extensions:/opt/node_app/extensions'
      - '../../../db:/opt/node_app/db'
      - '../../../certs:/opt/node_app/certs'
      - '../../../public/userdata:/opt/node_app/public/userdata:rw'
    ports: