Docs: Added passwords deploying strategy

docs/source/templating.rst

@@ -34,4 +34,17 @@ Reference table
 | ${checkName} | http                         | Name of the currently executed check             |
 +--------------+------------------------------+--------------------------------------------------+
 | ${date}      | 2019-10-31T07:53:45.380307   | Current date and time                            |
-+--------------+------------------------------+--------------------------------------------------+
++--------------+------------------------------+--------------------------------------------------+
+
+Example strategy of deploying passwords with Docker Compose and Ansible
+-----------------------------------------------------------------------
+
+1. Encrypt your passwords with ansible-vault
+2. Decrypt them during deployment into `.env` on target machine for docker-compose
+3. In docker-compose service definition pass variable explicitly from the `.env` file
+
+.. code:: yaml
+
+    environment:
+        # variables in checks
+        - IWA_SECURITY_MAN_PASSWD=${IWA_SECURITY_MAN_PASSWD}