Allow to override go2rtc binary in add-on

[felipecrs]

This adds a feature from the go2rtc add-on to the Frigate add-on:

• https://github.com/AlexxIT/go2rtc/blob/master/build/docker/run.sh

This is motived by this comment:

• Update go2rtc to 1.5.0 #5814 (comment)

Which says that users can override go2rtc through bind mounts, but that's unfortunately not available to add-on users like me.

I'm happy to make changes if needed.

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[NickM-27]

I think we may run into a problem with users who are also running the webrtc card v3 and have not pointed it at frigate. Depends how that version of go2rtc binary gets named

[felipecrs]

Some alternative ideas then:

1. /config/frigate-go2rtc
2. /config/frigate/go2rtc
3. /config/frigate/bin/go2rtc

WDYT?

[NickM-27]

Looks like go2rtc may be fine, looks like the webrtc card includes the arch / version in the name.

https://github.com/AlexxIT/WebRTC/blob/7bddb2dfaa84c8b6c38af62bed419252a1c26829/custom_components/webrtc/utils.py#L29

[NickM-27]

Just tested, works fine for me in a docker container as well which makes it easier

[cvroque]

Sorry to post on a closed PR, but how do I override the embedded go2rtc version while using the add-on?

[NickM-27]

Sorry to post on a closed PR, but how do I override the embedded go2rtc version while using the add-on?

Place the go2rtc file called go2rtc in /config

[felipecrs]

And ensure it has execution permission.