> For the complete documentation index, see [llms.txt](https://webdevops.gitbook.io/dockerfile/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://webdevops.gitbook.io/dockerfile/using-the-images/application-user-mechanism.md).

# Application user mechanism

To be writte gosu, env variables, etc.