Docker share guides: Match correct uid:gid of "ziggy" (UID 2171) in zrok container image for docker compose in guides

[kharish89]

I'm following the docker private and public share documentation here

Private share:
https://docs.zrok.io/docs/guides/docker-share/docker_private_share_guide/
https://docs.zrok.io/zrok-private-share/compose.yml
https://docs.zrok.io/zrok-private-access/compose.yml

Public share:
https://docs.zrok.io/docs/guides/docker-share/docker_public_share_guide/
https://docs.zrok.io/zrok-public-reserved/compose.yml

Looks like the recent release v0.4.30 has change to make the container default user to 'ziggy'

CHANGE: the container images run as "ziggy" (UID 2171) instead of the generic restricted user "nobody" (UID 65534). This reduces the risk of unexpected file permissions when binding the Docker host's filesystem to a zrok container.

Here's what I did:

• Downloaded the example compose file
• Updated the user info in busybox to match the zrok container user
• Updated value from 65534 : 65534 (user 'nobody') to 2171:2171 (user 'ziggy')

It would be nice to update the documentation or FAQ to reflect with the changed user details