File permission of output files is 'root:root' instead of the current user

[Youngerkind]

The file permission is 'root:root' instead of the current user.
I have searched online, but I didn't find a safe and easy solution.

[bi-ran]

you can consider using useradd and groupadd in the container to add a user with your uid and gid.

[Youngerkind]

Thanks for @bi-ran 's reply. You inspired me a lot. I know that I am not alone.

For now, I modify the script ai2bmd. In the container, a dummy user which has exactly the same uid and gid as the current user will be created. Thus the output files' permissions will belong to the current user.

    #launch_cmd = f"docker run -w {docker_cwd} {cat(gpu_opts)} --rm {cat(mount_opts)} {_docker_image} python -u /ai2bmd/main.py {cat(argv)}"
    #===========================================================================
    import grp
    """
    I add those lines to recover the file permissions, 
    from "root:root" to "{uid}:{gid}"
    """
    uid = os.getuid()
    uname = os.getlogin()
    gid = os.getgid()
    gname = grp.getgrgid(gid).gr_name
    launch_cmd = f"docker run -w {docker_cwd} {cat(gpu_opts)} --rm {cat(mount_opts)} {_docker_image} sh -c \
'groupadd -g {gid} {gname} && useradd -u {uid} -g {gid} -m {uname} && su {uname} -c \
\"/opt/conda/bin/python -u /ai2bmd/main.py {cat(argv)}\"'"   #===========================================================================

Maybe it's a better to generate a new container image with the current user created in advance. However, I am not familiar with docker, so I decide to use this modified script.