[19.03 backport] Do not disable sig-proxy when using a TTY - #2177

[19.03 backport] Do not disable sig-proxy when using a TTY#2177

andrewhsu merged 3 commits into

docker:19.03docker/cli:19.03from

thaJeztah:19.03_backport_fix_sig_proxythaJeztah/cli:19.03_backport_fix_sig_proxyCopy head branch name to clipboard