Update Dockerfile

Author: davidcortesortuno

Dockerfile

@@ -1,8 +1,9 @@
-FROM ubuntu:16.04
+FROM ubuntu:18.04
 
 RUN apt -y update 
 RUN apt install -y git python3 python3-pip gcc psutils cmake wget make
 RUN apt install -y gfortran libblas-dev liblapack-dev python3-tk sudo fonts-lato
+RUN pip3 install pip -U
 RUN pip3 install cython matplotlib pytest scipy psutil pyvtk ipywidgets -U
 RUN pip3 install --no-cache-dir notebook