NewStackerfile creates a new stackerfile from the given path.

NewStackerFiles reads multiple Stackerfiles from a list of paths and applies substitutions It adds the Stackerfiles mentioned in the prerequisite paths to the results.

StackerConfig is a struct that contains global (or widely used) stacker config options.

Command allows this type to be parsed from the yaml parser as either a list of strings or if a single string is specified, it is split with shlex.Split() into a list.

Logic for working with multiple StackerFiles.

StringList allows this type to be parsed from the yaml parser as either a list of strings, or if the entry was just one string, it is a list of length one containing that string.