reproduce

docker commands for setup

initialize the docker container for ssh tunnel

$ docker run -d -p 2222:22 arvindr226/alpine-ssh

$ docker run \
    -v $PWD/ssh_host_ed25519_key.pub:/home/docker/.ssh/keys/ssh_host_ed25519_key.pub:ro \
    -p 3333:22 -d atmoz/sftp \
  docker::::folder1,folder2

expected behaviour of the go run

$ ssh -vvv 2222 root:pass@localhost -L 2000:localhost:3333 -N

$ sftp -v -i ./ssh_host_ed25519_key -P 2000 docker@localhost

Connected to sftp
> 

expected behaviour of running go

go run main.go

log.Printf("fi %v", fi) # show that we have folder1 and folder2