How do I write to a volume container as non-root in docker?

How do I mount a volume writable by a non-root container user? I am ok with either the volume being owned by the non-root user or permissions being set to 777.


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  • FROM alpine
    RUN adduser -D myuser
    USER myuser

    Build image:

    docker build -t example .

    Run image, see /app unwritable by user

    % docker run -i -t -v myapp:/app example /bin/sh
    / $ whoami
    / $ ls -lha / | grep app
    drwxr-xr-x    2 root     root        4.0K Nov 12 21:01 app
    / $ 

    We can see app is globally readable but only writable by root.

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  • One Solution collect form web for “How do I write to a volume container as non-root in docker?”

    That is not yet supported, and is studied in issue 2259.
    That affect other images like docker-java.

    Basically, you have to chown and copy (with the right user) your data in the volume, which is not very convenient.

    Docker will be the best open platform for developers and sysadmins to build, ship, and run distributed applications.