-RUN touch /var/lib/rpm/* && yum -q -y install python33
-RUN scl enable python33 "easy_install-3.3 pip" && easy_install-2.7 pip
+RUN touch /var/lib/rpm/* && yum -q -y install rh-python35
+RUN scl enable rh-python35 "easy_install-3.5 pip" && easy_install-2.7 pip
+
+# Old versions of setuptools cannot build a schema-salad package.
+RUN pip install --upgrade setuptools
+
+# Add epel, we need it for the python-pam dependency
+RUN wget http://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
+RUN rpm -ivh epel-release-latest-7.noarch.rpm
+
+RUN git clone --depth 1 git://git.curoverse.com/arvados.git /tmp/arvados && cd /tmp/arvados/services/api && /usr/local/rvm/bin/rvm-exec default bundle && cd /tmp/arvados/apps/workbench && /usr/local/rvm/bin/rvm-exec default bundle && rm -rf /tmp/arvados