Create 'sources' directory explicitly in Pharo

[NicolasAnquetil]

Had a bug being unable to remove the output.json file in NexusDockerVerveineJRunner >> run

The problem was that sources directory where the file is located belonged to root (on linux)

My analysis is that:

• the directory <projectDirectory>/sources is used as verveinej source directory
• but on a project with no source (parent project for several modules), there is no sources
• as the directory did not exist before, I beleive docker (for verveinej) created it automatically
• therefore the directory belonged to root (just as the output.json file)

Consequence is it is not possible for a normal user to remove the file

[NicolasAnquetil]

It seems Nexus does not copy the source files in the sources directory, so I am not sure how this is supposed to work?
Does it suppose that source files are always in this place?