RUN /usr/bin/apt-get update && /usr/bin/apt-get install -q -y python2.7-dev python3 python-setuptools python3-setuptools python3-pip libcurl4-gnutls-dev libgnutls-dev curl git libattr1-dev libfuse-dev libpq-dev python-pip unzip tzdata python3-venv python3-dev
# Install virtualenv
-RUN /usr/bin/pip install virtualenv
+RUN /usr/bin/pip install 'virtualenv<20'
# Install RVM
ADD generated/mpapis.asc /tmp/