Add volume in Home Assistant

I’m following some instructions for adding devices to zigbee2mqtt and one of the things is says is:

Now add the volumes to the Docker container by adding the following to your docker run command.:

-v /opt/zigbee-herdsman-converters:/app/node_modules/zigbee-herdsman-converters -v /opt/homeassistant.js:/app/lib/extension/homeassistant.js

Home Assistant has a very cut down shell so I can’t run docker commands so I thought I might be able to use Portainer but I don’t know where to start.

Can anyone help point me in the right direction, please?

Thanks you!