Files in some specific roots are `ignored'

[YMnRb]

I find that in my repository, after building GitHub Pages, all very files under the directory /docs/.config(in main branch) are not included in the gh-pages branch.
Through further experiments, I find that if a file is under the directory ^/docs/.(regex), it will be `ignored' by mkdocs-material.

I wonder the reason why the phenomenon above appears. Could someone tell me whether it is a feature or a bug?

[squidfunk]

It's a feature. Dot files are ignored by MkDocs, not Material for MkDocs:

Files and directories with names which begin with a dot (for example: .foo.md or .bar/baz.md) are ignored by MkDocs. This can be overridden with the exclude_docs config.

Thus, please consider this an upstream issue.

[YMnRb]

Thanks very much for your answer!