I am not sure how accurate this is - I have run my Macbook M1 in clamshell mode for the past year and have almost never heard the fans, and never even felt heat coming off of it, despite having Docker / JetBrains full IDEs open

Running a local dev environment tends to hit ~75c for me on Apple Silicon, I think across 4 or 5 containers. I've also this same environment on my Thinkpad T460s (with a paltry i7 6600u), which settles out around 45-50c.