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Merge pull request #15510 from kblin/issue-14795 

reference/run: Clarify the use of numeric UIDs
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moxiegirl 2015-08-18 09:43:16 -07:00
parent 7ae6a505f2 ba29d31c9c
commit bba2551847
1 changed files with 8 additions and 5 deletions
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docs/reference/run.md
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@ -1142,14 +1142,17 @@ volume mounted on the host).
### USER
The default user within a container is `root` (id = 0), but if the
developer created additional users, those are accessible too. The
developer can set a default user to run the first process with the
Dockerfile `USER` instruction, but the operator can override it:
`root` (id = 0) is the default user within a container. The image developer can
create additional users. Those users are accessible by name. When passing a numeric
ID, the user does not have to exist in the container.
The developer can set a default user to run the first process with the
Dockerfile `USER` instruction. When starting a container, the operator can override
the `USER` instruction by passing the `-u` option.
-u="": Username or UID
> **Note:** if you pass numeric uid, it must be in range 0-2147483647.
> **Note:** if you pass a numeric uid, it must be in the range of 0-2147483647.
### WORKDIR