Activate python virtualenv in Dockerfile

Question

I have a Dockerfile where I try to activate python virtualenv after what, it should install all dependencies within this env. However, everything still gets installed global

Answer 1

If you your using python 3.x :

RUN pip install virtualenv
RUN virtualenv -p python3.5 virtual
RUN /bin/bash -c "source /virtual/bin/activate"

If you are using python 2.x :

RUN pip install virtualenv
RUN virtualenv virtual
RUN /bin/bash -c "source /virtual/bin/activate"