This is part of the Semicolon&Sons Code Diary - consisting of lessons learned on the job. You're in the containerization category.
Last Updated: 2024-11-23
I had www-data users in wordpress container and wordpress_cli container. Yet they
had different user ids! (33 vs. 82)
Therefore file permissions did not work as I naively expected.
This is a general gotcha with user names being the same in two containers (or in two machines generally).