Try to fix gitlab CI with PyImport sklearn error (again...)

.gitlab-ci.yml

@@ -17,11 +17,13 @@ pages:
   script:
     - apt-get update -qq && apt-get install -y git
     - echo $CI_COMMIT_BRANCH
+    - export PYTHON="" 
+      # The Pkg.develop() makes MarkovProcesses.jl available in julia
     - julia --project=docs/ -e 'using Pkg; Pkg.develop(PackageSpec(path=".")); Pkg.instantiate();'
     - julia --project=docs/ --color=yes docs/make.jl  # make documentation
     - mkdir public
-    - mkdir public/dev
-    - mv docs/build public/dev
+    # - mkdir public/dev
+    - mv docs/build public
   artifacts:
     paths:
       - public