Should gid and uid be customizable?

[tozz]

Any reason why these aren't configurable from the host? Right now on 3.3 you get a uid of 999 for example, this is a bit annoying when you mount host folders as volumes.

[tianon]

You should be able to use docker run --user to use any arbitrary UID/GID you please; see #81 for more details.

[tozz]

That doesn't affect the Dockerfile, everything in there is still done with the wrong uid/guid.
For example
RUN mkdir -p /data/db /data/configdb \ && chown -R mongodb:mongodb /data/db /data/configdb

[yosifkit]

Correct, but if you are mounting a directory from the host you can control the permissions of that directory to be accessible by the --user that you specify.

[yosifkit]

It should be something like this:

me@host$ mkdir mongo-data
# also make a configdb directory if you need one
me@host$ id -u
1000
me@host$ docker run -d -v "$PWD/mongo-data:/data/db" --user 1000 mongo
# or 
$ docker run -d -v "$PWD/mongo-data:/data/db" --user "$(id -u)" mongo

[tozz]

Yes, sorry for wasting you guys time, I was under the impression that 0644 on the host directory was enough of a permission but it actually needs to be 0744.