How to install Ubuntu packages "ffmpeg" under replit?

Looks like replit repo is actually a docker image, and I can tell it is a Ubuntu 20.04 for me.

  1. How can I install ffmpeg on this docker?
  2. How can I keep the previously modified docker for future use? I mean, whenever I reboot again, it will be able to have the new configuration ready for me ?

what exactly do you want to keep across reboots?


I love you man… It works…
Thank you so much…

I tried nix-shell -p ffmpeg, it doesn’t work.

BTW, Can you help to take a look at my other question:

A post was split to a new topic: Can you help me with an eSpeak issue?

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