Debug and get working

[stefpiatek]

Turns out I should take my own advice of RTFM:

You also need to choose a range of ports for data channels, say you want to support 10 concurrent users, pick 10 ports like 30000-30009 and pass that to docker run as --publish option as well as -p (passive port range) to pureftpd.

🤦 When it was all running in the docker network this wasn't a problem because the ports would just be there

Also had some tidying up and making the file upload method a bit easier to use when we've already got binary data (but not a file to read)

[stefpiatek]

Doesn't need to be used as I think we've got something which runs on apple silicone and intel chips