[QUESTION] How to get output logs properly without using "ffmpeg [...] 2> output.log"?

[esturniolo]

Hi!
I'm trying to get the output logs to a file in a host directory and I tried with -report, FFREPORT as variable, but I can't get the output to a file.

How would be the proper way to achieve this using in a docker container?

BONUS: get custom filenames. Get only the errors (if fails).

Thanks!!!