Removed Python 2 support and updated pip version.

# Install Python3 and Pip3 (ython3-distutils required for pip3)

RUN apt-get install python3 python3-distutils -y 

RUN python3 get-pip.py 'pip==10.0.1'

# Install Python2 and Pip2

RUN apt-get install python -y

RUN python get-pip.py 'pip==10.0.1'

RUN python3 get-pip.py 'pip==21.0.1'

# Python 3 dev (for pycrypto)

RUN apt-get install python3-dev -y