FYI how hot is in the sun isn't important, the "burn" is from UV radiation. Can still get burnt when it's cool outside, it just tends to be more likely when it's hot as the UV index is generally higher when it's hotter.

Hardware transcoding broke for me using the official image, to be fair it was docker on a VM which I think Plex say doesn't work. The Linuxserver images work flawlessly though, so might be worth considering depending on your use case.