Update docker file to python 3

.travis.yml

@@ -9,6 +9,10 @@ matrix:
     env:
       - PYTORCH_URL=http://download.pytorch.org/whl/cpu/torch-1.1.0-cp35-cp35m-linux_x86_64.whl
       - PYTHON_VERS=3.5
+  - python: "3.6"
+    env:
+      - PYTORCH_URL=http://download.pytorch.org/whl/cpu/torch-1.1.0-cp36-cp36m-linux_x86_64.whl
+      - PYTHON_VERS=3.6
 before_install:
   - pip install $PYTORCH_URL
 install:

Dockerfile_CPU

@@ -1,11 +1,6 @@
 # Generated by Neurodocker version 0.4.0
 # Timestamp: 2018-06-22 09:08:27 UTC
-# 
-# Thank you for using Neurodocker. If you discover any issues
-# or ways to improve this software, please submit an issue or
-# pull request on our GitHub repository:
-# 
-#     https://github.com/kaczmarj/neurodocker
+# https://github.com/kaczmarj/neurodocker
 
 FROM neurodebian:stretch-non-free
 
@@ -68,14 +63,15 @@ RUN echo '{ \
     \n}' > /neurodocker/neurodocker_specs.json
 
 RUN apt-get update \
-    && apt-get -y install git g++ python python-numpy libeigen3-dev zlib1g-dev libqt4-opengl-dev libgl1-mesa-dev libfftw3-dev libtiff5-dev curl \
-    && apt-get -y install git-core python-setuptools python-dev build-essential \
+    && apt-get -y install git g++ python3 libeigen3-dev zlib1g-dev libqt4-opengl-dev \
+    && apt-get -y install libgl1-mesa-dev libfftw3-dev libtiff5-dev curl \
+    && apt-get -y install git-core python3-pip python3-dev build-essential \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
-RUN easy_install pip \
+RUN pip3 install --upgrade pip \
     && pip install wheel numpy scipy nilearn matplotlib scikit-image nibabel \
-    && pip install https://download.pytorch.org/whl/cpu/torch-1.0.0-cp27-cp27mu-linux_x86_64.whl
+    && pip install http://download.pytorch.org/whl/cpu/torch-1.1.0-cp35-cp35m-linux_x86_64.whl
 
 RUN mkdir -p ~/.tractseg \
     && mkdir -p /code \