Install python in dockerfile

Dockerfile

@@ -26,6 +26,12 @@ RUN git clone https://github.com/pyenv/pyenv.git /builder/.pyenv && \
     echo "export PYENV_ROOT=$PYENV_ROOT" >> /builder/.profile && \
     echo "export PATH=$PYENV_ROOT/bin:$PATH" >> /builder/.profile
 
+ENV PYENV_ROOT "/builder/.pyenv"
+USER builder
+RUN PYTHON_CONFIGURE_OPTS="--enable-shared" pyenv install --force 3.5.5 && \
+    PYTHON_CONFIGURE_OPTS="--enable-shared" pyenv install --force 3.6.4
+
+    
 USER root
 
 # Entry point