ENV DEBIAN_FRONTEND noninteractive
# Install dependencies.
-RUN /usr/bin/apt-get update && /usr/bin/apt-get install -q -y python2.7-dev python3 python-setuptools python3-setuptools libcurl4-gnutls-dev curl git procps libattr1-dev libfuse-dev libgnutls28-dev libpq-dev python-pip unzip
+RUN /usr/bin/apt-get update && /usr/bin/apt-get install -q -y python2.7-dev python3 python-setuptools python3-setuptools libcurl4-gnutls-dev curl git procps libattr1-dev libfuse-dev libgnutls28-dev libpq-dev python-pip unzip python3-venv python3-dev
+
+# Install virtualenv
+RUN /usr/bin/pip install virtualenv virtualenv-tools
# Install RVM
ADD generated/rvm.asc /tmp/