RUN curl -fsSL https://get.docker.com/gpg | apt-key add -
RUN curl -fsSL https://get.docker.com/ | sh
-RUN pip install -U urllib3 setuptools pyparsing docker python-iptables
+RUN pip install -U urllib3==1.21.1
+RUN pip install -U setuptools pyparsing docker python-iptables
WORKDIR /
RUN git clone https://github.com/containernet/containernet.git
RUN containernet/util/install.sh