Add more docs. [skip ci]

Readme.md

@@ -81,11 +81,8 @@ On each node
  Do not forget to change tower's admin password
  (Upper right menu > Change Password)
 
-## Environment variables used by tower
+## Advanced topics 
 
-Several settings can be read from environment variables. 
-
-* `TOWER_RUN_CHECKS=` -- Run ansible checks. On well maintained system there is a way to save some time disabling consistency checks. Valid modes True(default), False.
-* `TOWER_SHOW_SECRETS=`  -- Run ansible showing and saving all secret data. Passwords and tokens will be shown and saved to log in that mode. Valid modes False(default), True.
-* `TOWER_VERSION=` -- Internal var. Used to check if tower generates inventory well.
-* `TOWER_DB_PATH=` -- Internal var. Used to specify `config.db` path
\ No newline at end of file
+* [Quick docker-compose notes](docs/docker-compose.md)
+* [Environment variables](docs/env.md)
+* [Writing own roles](docs/roles.md)
\ No newline at end of file

docs/docker-compose.md

+# Docker-compose cheat sheet
+
+```
+$ docker-compose up -d                    # start containers in background
+$ docker-compose stop                     # stop containers
+$ docker-compose rm -v                    # remove stopped containers and volumes
+$ docker-compose ps                       # see list of running containers
+```
+
+# Enter tower shell
+```
+$ docker-compose exec tower sh   
+```
+
+# Show current version
+ 
+```
+$ docker-compose images                   # tag and images id
+```
+
+# Update tower
+```
+$ docker-compose pull                     # get latest container version
+$ docker-compose up -d                    # start containers in background
+```
+
+# View logs
+```
+$ docker-compose logs tower               # all logs
+$ docker-compose logs -f tower            # see all and follow new logs
+$ docker-compose logs -f --tail=10 tower  # show last 10 and follow. most useful one
+```

docs/env.md

+# Environment variables used by tower
+
+Several settings can be read from environment variables. 
+
+* `TOWER_RUN_CHECKS=` -- Run ansible checks. On well maintained system there is a way to save some time disabling consistency checks. Valid modes True(default), False.
+* `TOWER_SHOW_SECRETS=`  -- Run ansible showing and saving all secret data. Passwords and tokens will be shown and saved to log in that mode. Valid modes False(default), True.
+* `TOWER_VERSION=` -- Internal var. Used to check if tower generates inventory well.
+* `TOWER_DB_PATH=` -- Internal var. Used to specify `config.db` path
\ No newline at end of file

docs/roles.md

+# Roles
+
+Tower can be used to launch your own roles. There are few conceptions that should be metioned for doing that. 
+