[documentation] ownership of files and configuration

[vsoch]

We are having discussion here about where (in the new docs) the content is represented that was discussed in the old docs here. Specifically we are interested in issues around ownership and mode of files at install.

[vsoch]

You can look at the singularity-orb to see what works for non traditional install locations, for:

• 2.x: https://github.com/singularityhub/singularity-orb/blob/master/src/orb.yml#L230
• 3.x: https://github.com/singularityhub/singularity-orb/blob/master/src/orb.yml#L215

[dtrudg]

A listing can be generated with find . -printf "%p %u:%g %m (%M)\n"