Any idea on how to fix this permission issue?

Try

fleetctl preview

as described in https://fleetdm.com/get-started.

Yeah I used that initially, but I am following what command does initially: docker-compose up -d --remove-orphans mysql01 redis01 fleet01 https://github.com/fleetdm/fleet/blob/6d2ae02efd077adc40f9e45c745e777e207581cd/cmd/fleetctl/preview.go#L83

Looks like you are missing a write permission on that directory from your

ls -l

output

Thanks!