>> The normal procedure would be to mount the ext2 file system as loop
>> back. The copy in the file, umount and compress with gzip.
>>>> Since I do not want the builds to have to run as root, I'm looking for a
>> solution that works with normal user privileges.
Some tasks (like building an initrd) are just easier if you do run as
root. But nevertheless, why not just configure sudo to allow the user,
or users, that you run the builds as, access to only the mount command
to be run as root. Allowing only specific commands to specific users
or groups to run with root privilege is a perfect job for sudo. You
can even restrict to a certain command with certain options or
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