Nginx / letsencrypt / docker -- Ubuntu 16.04

That is the problem.. there is no service running there. And it should be running right? – By the configuration. That problem appears when i install nginx. And letsencrypt. Before doing that, i could reach my discourse on that port.

EDITED:

Like i said here, i think that problem come from here.

EDIT2:

 docker.service - Docker Application Container Engine
   Loaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled)
   Active: active (running) since Sat 2018-01-13 09:48:09 UTC; 3h 6min ago
     Docs: https://docs.docker.com
 Main PID: 1382 (dockerd)
    Tasks: 22
   Memory: 113.6M
      CPU: 1min 16.716s
   CGroup: /system.slice/docker.service
           ├─1382 /usr/bin/dockerd -H fd://
           └─1492 docker-containerd --config /var/run/docker/containerd/containerd.toml

Jan 13 09:48:09 hkh dockerd[1382]: time="2018-01-13T09:48:09.658704124Z" level=error msg="b91fdb1b28df259975c52de80ab51f8a11d5c43daf3f1da1f767df7031dd5a5e cleanup: fai
Jan 13 09:48:09 hkh dockerd[1382]: time="2018-01-13T09:48:09.659260943Z" level=error msg="Failed to start container b91fdb1b28df259975c52de80ab51f8a11d5c43daf3f1da1f76
Jan 13 09:48:09 hkh dockerd[1382]: time="2018-01-13T09:48:09.659896029Z" level=info msg="Loading containers: done."
Jan 13 09:48:09 hkh dockerd[1382]: time="2018-01-13T09:48:09.696332892Z" level=info msg="Docker daemon" commit=03596f5 graphdriver(s)=overlay2 version=18.01.0-ce
Jan 13 09:48:09 hkh dockerd[1382]: time="2018-01-13T09:48:09.697512501Z" level=info msg="Daemon has completed initialization"
Jan 13 09:48:09 hkh dockerd[1382]: time="2018-01-13T09:48:09.708078451Z" level=info msg="API listen on /var/run/docker.sock"
Jan 13 09:48:09 hkh systemd[1]: Started Docker Application Container Engine.
Jan 13 09:53:43 hkh dockerd[1382]: time="2018-01-13T09:53:43Z" level=info msg="shim docker-containerd-shim started" address="/containerd-shim/moby/efc749e9f165b37aa8e1
Jan 13 09:53:43 hkh dockerd[1382]: time="2018-01-13T09:53:43Z" level=info msg="shim reaped" id=efc749e9f165b37aa8e12c891f74b606b38b318e43efc39213903f00c1d74b79 module=
Jan 13 09:53:43 hkh dockerd[1382]: time="2018-01-13T09:53:43.962437141Z" level=info msg="ignoring event" module=libcontainerd namespace=moby topic=/tasks/delete type="
~

Jan 13 09:48:09 hkh dockerd[1382]: time=“2018-01-13T09:48:09.659260943Z” level=error msg="Failed to start container b91fdb1b28df259975c52de80ab51f8a11d5c43daf3f1da1f76

This is my docker images;

dbm@hkh:~$ sudo docker images
REPOSITORY            TAG                 IMAGE ID            CREATED             SIZE
local_discourse/app   latest              c8f855b4c3a9        4 hours ago         2.79GB
<none>                <none>              b0cd4d872d9d        4 hours ago         2.79GB
discourse/base        2.0.20171231        3925ef3919cc        12 days ago         1.73GB