don't run epicli as root in container

[lukurde]

By default docker image 0.4.1 runs root user for epicli. There shouldn't be need for that, and this raises issue with ansible:

{"asctime": "14:01:38", "levelname": "INFO", "name": "cli.engine.ansible.AnsibleCommand", "message": "fatal: [master]: UNREACHABLE! => {"changed": false, "msg": "Failed to connect to the host via ssh: Warning: Permanently added '192.168.100.136' (ECDSA) to the list of known hosts.\r\nControl socket connect(/root/.ansible/cp/774fde95b3): Connection refused\r\nFailed to connect to new control master", "unreachable": true}"}

Ansible on some configurations doesn't have permissions to write sockets to /root/.ansible/cp

Workaround:

    mkdir /root/.ansible
    ln -s /dev/shm /root/.ansible/cp