`cargo run -- init` fails in `groupadd` with GID already exists

[wjmelements]

#8 [4/9] RUN groupadd -g 20 foc-group &&     useradd -l -u 501 -g foc-group -m -s /bin/bash foc-user &&     mkdir -p /home/foc-user/go/pkg &&     chown -R foc-user:foc-group /home/foc-user/go
#8 0.292 groupadd: GID '20' already exists
#8 ERROR: process "/bin/sh -c groupadd -g ${GROUP_ID} foc-group &&     useradd -l -u ${USER_ID} -g foc-group -m -s /bin/bash foc-user &&     mkdir -p /home/foc-user/go/pkg &&     chown -R foc-user:foc-group /home/foc-user/go" did not complete successfully: exit code: 4
------
 > [4/9] RUN groupadd -g 20 foc-group &&     useradd -l -u 501 -g foc-group -m -s /bin/bash foc-user &&     mkdir -p /home/foc-user/go/pkg &&     chown -R foc-user:foc-group /home/foc-user/go:
0.292 groupadd: GID '20' already exists

[redpanda-f]

Can you list your user and group details? We need unpriviledged users and groups, so UID, GID 1000 or more is what has been tested. Seems like you are using GID '20'?

[beck-8]

I encountered the same problem yesterday. I upgraded my macOS today and am currently running a test build for the official version to see if the issues persist.

# beck @ beckMacBook-Pro in ~ [20:02:18] C:1
$ echo $(id -u); groups
501
staff everyone localaccounts _appserverusr admin _appserveradm _lpadmin access_bpf com.apple.sharepoint.group.1 _appstore _lpoperator _developer _analyticsusers com.apple.access_ftp com.apple.access_screensharing com.apple.access_ssh com.apple.access_remote_ae

# beck @ beckMacBook-Pro in ~ [20:02:28]
$ echo $(id -u); groups | grep 'docker'
501

# beck @ beckMacBook-Pro in ~ [20:09:14] C:1
$ id -u
501

[beck-8]

It seems it's still there. I'm using macOS 26 and the desktop version of Docker.

[beck-8]

I got it, it's due to the macos user's group ID being 20 and the group ubuntu 20 already exists.

[wjmelements]

I got it, it's due to the macos user's group ID being 20 and the group ubuntu 20 already exists.

That shouldn't matter, but I don't have a user or group with id 20 in the mac.

Can you list your user and group details? We need unpriviledged users and groups, so UID, GID 1000 or more is what has been tested. Seems like you are using GID '20'?

I presume you mean in docker. How do I do that?

[beck-8]

The default ID 20 for macOS is "staff". This is almost universal.

I've already submitted a PR; you can try it out and test it out.

[wjmelements]

The default ID 20 for macOS is "staff".

ah there it is. thanks