Change test container base image to match the new working directory
Change test container base image to match the new working directory

That was missing in https://github.com/PopulateTools/gobierto/pull/204

[ci skip]

PopulateTools/gobierto,PopulateTools/gobierto,PopulateTools/gobierto,PopulateTools/gobierto-dev,PopulateTools/gobierto,PopulateTools/gobierto-dev,PopulateTools/gobierto-dev,PopulateTools/gobierto-dev