Force downgrade pip to <v10
There's a dependency incompatibility issue which causes the `RUN pip install -r https://raw.githubusercontent.com/kubos/kubos-cli/master/requirements.txt` command to fail:
Forcing the pip install to remain at v9 until the issue is resolved
@@ -17,7 +17,9 @@ RUN apt-get install -y unzip wget
#do the pip setup and installation things
RUN easy_install pip
-RUN pip install --upgrade pip
+# Need to install pip<v10 due to this issue: https://github.com/ARMmbed/yotta/issues/835
+# Forcibly controlling version until this is resolved
+RUN pip install pip==9.0.3
#Kubos Linux setup
RUN echo "Installing Kubos Linux Toolchain"
