reconfigure initial commit data

Prepare for Netbox 4.0

docker-entrypoint.sh: clarify default token message ...

When a default admin API token is found, a warning is displayed. As it is only called "token", some users might not know what token is referred to. Also the message should give a hint or link to a documentation on how to remove it.

Update Ubuntu und Nginx Unit

Catch DoesNotExist preventing startup ...

Fixes failing startup because of python error:

```
Traceback (most recent call last):
  File "/opt/netbox/netbox/./manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "/opt/netbox/venv/lib/python3.10/site-packages/django/core/management/__init__.py", line 446, in execute_from_command_line
    utility.execute()
  File "/opt/netbox/venv/lib/python3.10/site-packages/django/core/management/__init__.py", line 440, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/opt/netbox/venv/lib/python3.10/site-packages/django/core/management/base.py", line 402, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/opt/netbox/venv/lib/python3.10/site-packages/django/core/management/base.py", line 448, in execute
    output = self.handle(*args, **options)
  File "/opt/netbox/venv/lib/python3.10/site-packages/django/core/management/commands/shell.py", line 127, in handle
    exec(sys.stdin.read(), globals())
  File "<string>", line 2, in <module>
  File "/opt/netbox/venv/lib/python3.10/site-packages/django/db/models/manager.py", line 85, in manager_method
    return getattr(self.get_queryset(), name)(*args, **kwargs)
  File "/opt/netbox/venv/lib/python3.10/site-packages/django/db/models/query.py", line 650, in get
    raise self.model.DoesNotExist(
users.models.Token.DoesNotExist: Token matching query does not exist.
```

Don't create superuser with default credentials

Merge pull request #948 from tobiasge/lazy-reindex-on-start ...

Fixes #947: Rebuild search index when needed

Updated to new unit version

Fixes #947: Rebuild search index when needed ...

This rebuilds the search index when models where updated.

Merge pull request #889 from netbox-community/listenOnIPv6 ...

Make nginx-unit listen on IPv4 and IPv6

Removed warning for initializer scripts

Make nginx-unit listen on IPv4 and IPv6

Don't use bash internal variable name

Initializers are now a plugin

First version of Debian based image

Fix #653: Add missing __dir__ to configuration.py

Use user name instead of userid ...

Nginx unit needs the user and group parameter as names.

Merge pull request #546 from tobiasge/drop-privileges ...

Drops privileges to user 101 and group 0

Merge pull request #571 from tobiasge/house ...

Added container for Netbox housekeeping command

Quote variable ...

Co-authored-by: Christian Mäder <[email protected]>

Added container for Netbox housekeeping command ...

Adds an additional container in which the new "housekeeping" command from
Netbox v3.0.0 is run.

Print last line of django db connection error while waiting for db to start ...

Fixes #562

django-cacheops has been removed from Netbox 3.0.0

Drops privileges to user 101 and group 0 ...

When the container is started as root the default was to drop privileges to "unit:unit". This caused some problems with temporary files. Now the privileges are drop to "101:0".
When the container is started as a normal user unit prints a warning that changing the user and group is not possible. This warning is safe to ignore.

Optimise migrations on startup ...

The migrations are only started if there are some that have not been
applied. Additionally the maintenace task needed after an update are
now run after the migrations

Fix quoting of exec argument in the entrypoint script

Don't load main config twice ...

Before, the main_config (e.g. 'configuration.py' or 'ldap_config.py') were loaded twice.
The first load was hard-coded and correct.
The second load was during the discovery phase for dynamic configurations.
This has now been fixed. During the discovery for dynamic configurations,
the main_config file is now excluded.

Thanks @tobiasge for discovering this bug.

Format shell scripts with shfmt

Fix shellcheck complaint

Use black as formatter for python files