docker on Ubuntu 16.04 is running on as VM of VirtualBox
$ sudo apt install darktable
Installation went throught without complaint
On Host (Ubuntu 16.04 desktop) terminal run;
~⟫ ssh 192.168.8.59
The authenticity of host ‘192.168.8.59 (192.168.8.59)’ can’t be established.
ECDSA key fingerprint is SHA256:HjMkOuERIUkwdnqIg0/NU7Jk5M6pwRDEs+LZYAAzpb8.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added ‘192.168.8.59’ (ECDSA) to the list of known hosts.
Welcome to Ubuntu 16.04.3 LTS (GNU/Linux 4.4.0-112-generic x86_64)
0 packages can be updated.
0 updates are security updates.
Last login: Wed Jan 31 23:02:56 2018
$ which darktable
[defaults] found a 64-bit system with 1016044 kb ram and 1 cores (0 atom based)
[defaults] setting very conservative defaults
Failed to connect to Mir: Failed to connect to server socket: No such file or directory
Unable to init server: Could not connect: Connection refused
(darktable:3741): Gtk-WARNING **: cannot open display:
Please advise. Thanks