User options: add user_options.yml and remove Docker

The user_options.yml file isn't under git and that's intended to allow
users to do some local configuration without it being overwritten by
the next git pull.

Docker is used just for testing and is no longer released with the repo.
It can be added back if there's interest.

Author: Bill Meek

.gitignore

@@ -1,14 +1,12 @@
-# Tools/WIP
-tags
-*.setup.out
-*.sh
-*~
 Dockerfile
+Docker
 TODO
-# vim etc.
-*.swp
+tags
+group_vars/user_options.yml
 *~
-# for any leftovers...
-qt5.retry
+*.setup.out
+*.sh
+**.swp
 # If retry_files_enabled=False gets changed in ansible.cfg
 mythtv.retry
+qt5.retry