hi it doesnt seem to work for me on ubuntu lts 20

1 - build didnt work at first, had to remove the \ from your command

2- once I had the image and ran docker run -ti f6c7012d0d4 , it shows me the usage of cardano-node , so I try docker run -ti f6c7012d0d4 run

and it tells me YAML exception yaml file not fount : configuration/cardano/mainnet-config.json