Convert0to1 converts the deprecated builderfile version 0 to version 1.

Logger sets the (global) logger for the builderfile package.

Builderfile is a struct representation of what is expected to be inside a Builderfile.

ContainerSection is a struct representation of an individual member of the "containers" section of a Builderfile.

Docker is a struct representation of the "docker" section of a Builderfile.