check xauth is installed on both servers, the target (docker container) and the host server
check AddressFamily inet, X11UseLocalhost and X11Forwarding yes
sshd running on docker container
Example for AWS box:
10.95.107.71> ssh -X -i /root/.ssh/my_aws_key_pair ec2-user@10.64.74.37 -L 17222:172.17.0.2:22
10.95.107.71> ssh -X -i /root/.ssh/my_aws_key_pair oracle@localhost -p 17222
