Let pattern match subdirs
From !1352 (comment 454709169), this wasn't matching to all Dockerfiles. Checking the pattern information at https://git-scm.com/docs/gitignore#_pattern_format (which also applies to .gitattributes), **/ should work.
From !1352 (comment 454709169), this wasn't matching to all Dockerfiles. Checking the pattern information at https://git-scm.com/docs/gitignore#_pattern_format (which also applies to .gitattributes), **/ should work.