Regex matching branches to build. Exactly one a of branch name, tag, or commit SHA must be provided. The syntax of the regular expressions accepted is the syntax accepted by RE2 and described at https://github.com/google/re2/wiki/Syntax
Directory, relative to the source root, in which to run the build. This must be a relative path. If a step's dir is specified and is an absolute path, this value is ignored for that step's execution.
Regex matching tags to build. Exactly one a of branch name, tag, or commit SHA must be provided. The syntax of the regular expressions accepted is the syntax accepted by RE2 and described at https://github.com/google/re2/wiki/Syntax