fkn

It depends on what you are trying to do… There are many tunnel / reverse proxy routing services like https://www.cloudflare.com/products/tunnel/

Here’s a list https://github.com/anderspitman/awesome-tunneling

You can also get a super cheap vps, do some ssh reverse tunnel magic and go along with your day.

Did you ever solve this?

It’s possible that ownership/group is wrong. Is there a reason you used cp -a. Instead of rsync -a? The rsync version is a much closer duplicate than the cp version.

Edit: also if your base folder has different permissions that you are mounting into docker are different permissions this can happen.