Add templates from hidden directories

[tochev]

Motivation / Background

The .devcontainer/* template files (introduced in #50914 ) were not included in the railties gem, resulting in a failure to create a new project (rails new foo).

The error was Could not find ".devcontainer/devcontainer.json" in any of your source paths.

Detail

The .devcontainer/* template files were not included in the railties gem, because the old file pattern didn't match files in hidden directories, only hidden files.

Additional information

The issue was observed with ruby 3.3.0 (2023-12-25 revision 5124f9ac75) [x86_64-linux]

Gem contents for devcontainer before the change:

Gem contents after the change:

File diff between the two:

Alternative pattern

An alternative could be

Dir[..., "exe/**/*", "lib/{**,**/.[a-z]*/**}/{*,.[a-z]*}"])

but I think it is harder to read.

Checklist

Before submitting the PR make sure the following are checked:

• [*] This Pull Request is related to one change. Unrelated changes should be opened in separate PRs.
• [*] Commit message has a detailed description of what changed and why. If this PR fixes a related issue include it in the commit message. Ex: [Fix #issue-number]
• [*] CHANGELOG files are updated for the changed libraries if there is a behavior change or additional feature. Minor bug fixes and documentation changes should not be included.

[yahonda]

Thanks for opening a pull request. Now main branch renames .devcontainer to devcontainer by removing the . prefix via 5fea59c so it looks like this fix is not needed.

[yahonda]

7-2-stable branch also back ports this change via 77c73da

[yahonda]

Closing this pull request since renaming.devcontainer to devcontainer by removing the . prefix.

Thanks again for your contribution.