Added dockerized deployment as third official deployment method. Created a new Dockerfile that uses the Ansible-based installation so we still need to maintain only one installation script. The old Dockerfiles in "utils" is deprecated.

Signed-off-by: Manuel Peuster <manuel@peuster.de>
diff --git a/ansible/install.yml b/ansible/install.yml
index b032b0b..61d12a2 100755
--- a/ansible/install.yml
+++ b/ansible/install.yml
@@ -89,6 +89,9 @@
    - name: install ipaddress
      pip: name=ipaddress state=latest
 
+   - name: install gevent
+     pip: name=gevent state=latest
+
    #- name: install urllib
    #  pip: name=urllib state=latest