Add staging and development environments

Differentiated between both.

Development environment takes place locally, most directly through the
use of a vagrant machine on the development machine.

Staging environment mimics the final production environment, but is
situated on another server and, most probably, points to a different
address. Otherwise, however, it translates much more closely (dns
entries etc) to the production setup.

Production is just that, the final deployment.

.gitignore

@@ -5,6 +5,11 @@
 ### Ansible ###
 *.retry
 
+### ansible private files ###
+inv-prod.yml
+group_vars/staging.yml
+host_vars/ssdnodes.yml
+
 ### Linux ###
 *~
 

ansible.cfg

@@ -1,3 +1,3 @@
 [defaults]
 
-inventory = ./staging.yml
+inventory = ./inv-dev.yml

inv-staging.yml

@@ -0,0 +1,8 @@
+staging:
+  hosts:
+    ssdnodes:
+
+docker_swarm_manager_node:
+  hosts:
+    ssdnodes:
+

site-dev.yml

@@ -0,0 +1,6 @@
+---
+
+- hosts: docker_swarm_manager_node
+  roles:
+    - whoami
+    - wallabag