Not sure I’m even asking the right questions (definitely my google searches are coming empty).
What I want is ideally an intuitive way to chain containers together (e.g. I want one to read up inputs from a telegram bot -> send the link to another that downloads the YouTube video -> depending on the size, for another to move the file around).
There must be solutions to orchestrate all this - can you help me go in the right direction please?
Just use docker-compose? Put multiple containers in one compose file. Create an internal network for them to communicate with.
As far as the general solution to the higher level question asked, this is the way. For the specific application, can certainly question the question of the multiple containers in the first place.