This works better than checking just the database, because it could be
that an empty database has already been created (with e.g. Docker
Compose).
TABLES_EXIST should be empty if no tables, or will return a 1
for *each* table that exists.
* Remove Ansible and all Python packages
* Reduce image size by 456 MB (689 MB => 233 MB uncompressed)
* Fixes some open issues, for example, root password is not required if the database already exists.
* Show install and startup traces (traces and errors were hidden by Ansible)
This adds the ability to run wallabag async import worker that
interacts with a redis service.
Signed-off-by: Jan Losinski <losinski@wh2.tu-dresden.de>
