Docker Wordpress tar: <file> Cannot change ownership to uid 33, gid 33: Operation not permitted

The error is reported by tar command that try to change owner.

In order to avoid tar to set owner you can set variable TAR_OPTIONS to --no-same-owner
From tar manual:

--no-same-owner
Extract files as yourself (default for ordinary users).

You can add this in your docker-compose file with :

  TAR_OPTIONS: --no-same-owner

The problem that you are having is that you are mounting a local volume with your user's permissions, and not www-data. As such, www-data is not able to change the permissions of files that your user owns. To fix it, you should be able to do chown 33:33 -R /Users/myuser/Sites/dockertest/wp-data/wp-content. Keep in mind that if you get and error something like Permissions denied, run the command with sudo.

First, you could try setting the additional volume option of nocopy to True.

If that doesn't work maybe you check the groups www-data is part of.I think in case you want to set the user and group to www-data, ensure www-data is part of the same group as the nfs shared folder.

Else it is preferred to use a local user and group that has access to the nfs file.

APACHE_RUN_USER  : local_userAPACHE_RUN_GROUP : local_group