Update .gitpod.Dockerfile

Author: alesanchezr

.gitpod.Dockerfile

@@ -1,3 +1,4 @@
 FROM gitpod/workspace-full
 USER gitpod
-RUN pip3 install pytest==4.4.2 pytest-testdox mock && npm i breathecode-cli@1.2.70 -g
+RUN pip3 install pytest==4.4.2 pytest-testdox mock
+RUN npm i learnpack@0.1.14 -g && learnpack plugins:install learnpack-python@0.0.35