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Add documentations on how to setup /etc/subuid and /etc/subgid

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Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>

Closes: #1185
Approved by: giuseppe
This commit is contained in:
Daniel J Walsh
2018-07-30 09:44:02 -04:00
committed by Atomic Bot
parent 5a4e5902a0
commit 00caebde61
3 changed files with 14 additions and 3 deletions
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docs/podman.1.md
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@ -171,6 +171,17 @@ Containers created by a non-root user are not visible to other users and are not
It is required to have multiple uids/gids set for an user. Be sure the user is present in the files `/etc/subuid` and `/etc/subgid`.
If you have a recent version of usermod, you can execute the following
commands to add the ranges to the files
$ sudo usermod --add-subuids 10000-75535 USERNAME
$ sudo usermod --add-subgids 10000-75535 USERNAME
Or just add the content manually.
$ echo USERNAME:10000:65536 >> /etc/subuid
$ echo USERNAME:10000:65536 >> /etc/subgid
Images are pulled under `XDG_DATA_HOME` when specified, otherwise in the home directory of the user under `.local/share/containers/storage`.
Currently it is not possible to create a network device, so rootless containers need to run in the host network namespace. If a rootless container creates a network namespace,