Support for new Docker env var: RECYCLARR_CREATE_CONFIG

[rcdailey]

See details on my corresponding commit: https://github.com/recyclarr/recyclarr/commit/8155cdd385382c15b03e27ea7801c3189a07eaae

What Changed?

A new environment variable, RECYCLARR_CREATE_CONFIG, has been introduced which instructs the container to create a default recyclarr.yml on start up if it does not exist.

By default, this environment variable is set to false to avoid impacting existing users.

Motivation

Unraid presents a unique challenge where one or both of the following are true:

• Users struggle to manually create recyclarr.yml due to lack of technical knowledge/expertise.
• Invoking the necessary CLI commands is tedious/challenging on this platform. Most examples in the official docs use Docker Compose which isn't helpful here.

Requested Changes

I propose the following changes for the Unraid template:

• Introduce a GUI toggle for the RECYCLARR_CREATE_CONFIG environment variable that is set to true by default.
• Optionally give users the ability to change this to false if they so wish.
• Restrict the valid values for this environment variable to either true or false (can be strings). Other values are not supported by the official Recyclarr container.

[rcdailey]

Note also that this is not officially released yet (not available on the latest tag). It's currently only available on the edge tag.

[gtronset]

@rcdailey handled in https://github.com/tritones/unraid-templates/pull/9! Tested, confirmed, etc.:

Creating default recyclarr.yml file...
[INF] Created configuration at: /config/recyclarr.yml
Starting cron schedule using: @daily
time="2022-12-03T15:05:41-08:00" level=info msg="read crontab: /tmp/crontab"

A couple of notes: the default, as discussed, is set to false to avoid impacting existing users. Unfortunately, Unraid only provided a relatively simple interface without boolean toggles or radio buttons, which means that strings have to be used to see the variable. That said, I've added a description of the valid values to help ease confusion (and there are clear references elsewhere in the template description to refer to Recyclarr's Wiki).

It takes approximately two hours for templates to propagate to users (the upstream "app store" has a scanner that runs every two hours).