Documentation: File ownership and permissions

[HebaruSan]

Problem

Neither the general workflow documentation nor this repo's README mention file ownership or permissions at all, but these things can cause this action to fail, see #133.

Suggestion

The documentation should specify the assumptions / prerequisites / requirements to successfully cache a file. Does it need to be owned by a particular user? Which user? Does it need to be readable by everyone? Is there a way to make this action work with all files regardless of their ownership and permissions?

This would help to ensure that users who follow the action's instructions end up wtih a working workflow instead of a broken one.

Note that the documentation for Docker actions says this:

... so some actions will run as root. The documentation should discuss best practices for how to ensure that root-owned files created by such actions can be cached.

[github-actions]

This issue is stale because it has been open for 365 days with no activity. Leave a comment to avoid closing this issue in 5 days.

[HebaruSan]

As far as I can tell from a quick browse, this is still an issue. 👋

[github-actions]

This issue is stale because it has been open for 200 days with no activity. Leave a comment to avoid closing this issue in 5 days.

[HebaruSan]

As far as I can tell from a quick browse, this is still an issue. 👋

[github-actions]

This issue is stale because it has been open for 200 days with no activity. Leave a comment to avoid closing this issue in 5 days.

[HebaruSan]

If this had been fixed, I think a comment would have been made about it.

[github-actions]

This issue is stale because it has been open for 200 days with no activity. Leave a comment to avoid closing this issue in 5 days.

[HebaruSan]

Presumed unfixed.