Upgrade pip after building Python

docker/2_buildpy/build.sh

@@ -34,6 +34,9 @@ make -j8 install
 # Make sure we can run Python
 ldconfig
 
+# Upgrade pip
+/opt/python/bin/python3 -m pip install -U pip
+
 # Build mod-wsgi-py3 for Python 3.6
 cd /dpkg/mod-wsgi-*
 ./configure --with-python=/opt/python/bin/python3

docker/2_buildpy/includepy.docker

@@ -10,5 +10,4 @@ RUN echo Python is installed in /opt/python/ > README.python
 ENV PATH=/opt/python/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
 
 RUN cd /opt/python/bin && \
-    ln -s python3 python && \
-    ln -s pip3 pip
+    ln -s python3 python