docker latest no port issue

gistfile1.txt

$ docker ps
CONTAINER ID        IMAGE                     COMMAND                CREATED             STATUS              PORTS                     NAMES
32b9ac00b8fa        dokku/coach:latest        "/bin/bash -c '/star   About an hour ago   Up About an hour                              determined_bardeen
ed13cc0c60b6        dokku/helloworld:latest   "/bin/bash -c '/star   About an hour ago   Up About an hour    0.0.0.0:49154->5000/tcp   dreamy_hopper

$ grep coach2.xxx.pw /home/dokku/*/nginx.conf
/home/dokku/coach2/nginx.conf:  server_name coach2.xxx.pw ;
$ grep -r coach2.xxx.pw /etc/nginx/

/etc/nginx/conf.d/dokku.conf:include /home/dokku/*/nginx.conf;
/etc/nginx/snippets/fastcgi-php.conf:include fastcgi.conf;
/etc/nginx/nginx.conf.dpkg-old:  include /etc/nginx/mime.types;
/etc/nginx/nginx.conf.dpkg-old:  include /etc/nginx/conf.d/*.conf;
/etc/nginx/nginx.conf.dpkg-old:  include /etc/nginx/sites-enabled/*;
/etc/nginx/nginx.conf:  include /etc/nginx/mime.types;
/etc/nginx/nginx.conf:  include /etc/nginx/conf.d/*.conf;
/etc/nginx/nginx.conf:  include /etc/nginx/sites-enabled/*;
/etc/nginx/sites-available/default: # include snippets/snakeoil.conf;
/etc/nginx/sites-available/default: #   include snippets/fastcgi-php.conf;

cat /home/dokku/*/nginx.conf
upstream coach2 { server 172.17.0.57:5000; }
server {
  listen      [::]:80;
  listen      80;
  server_name coach2.xxx.pw ;
  location    / {
    proxy_pass  http://coach2;
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection upgrade;
    proxy_set_header Host $http_host;
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_set_header X-Forwarded-For $remote_addr;
    proxy_set_header X-Forwarded-Port $server_port;
    proxy_set_header X-Request-Start $msec;
  }
  include /home/dokku/coach2/nginx.conf.d/*.conf;
}
upstream coach { server 172.17.0.39:5000; }
server {
  listen      [::]:80;
  listen      80;
  server_name coach.xxx.pw coach.thebaydoor.com;
  location    / {
    proxy_pass  http://coach;
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection upgrade;
    proxy_set_header Host $http_host;
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_set_header X-Forwarded-For $remote_addr;
    proxy_set_header X-Forwarded-Port $server_port;
    proxy_set_header X-Request-Start $msec;
  }
  include /home/dokku/coach/nginx.conf.d/*.conf;
}
upstream helloworld { server 127.0.0.1:49154; }
server {
  listen      [::]:80;
  listen      80;
  server_name helloworld.xxx.pw;
  location    / {
    proxy_pass  http://helloworld;
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "upgrade";
    proxy_set_header Host $http_host;
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_set_header X-Forwarded-For $remote_addr;
    proxy_set_header X-Forwarded-Port $server_port;
    proxy_set_header X-Request-Start $msec;
  }
  include /home/dokku/helloworld/nginx.conf.d/*.conf;
}
upstream test { server 172.17.0.75:5000; }
server {
  listen      [::]:80;
  listen      80;
  server_name test.xxx.pw ;
  location    / {
    proxy_pass  http://test;
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection upgrade;
    proxy_set_header Host $http_host;
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_set_header X-Forwarded-For $remote_addr;
    proxy_set_header X-Forwarded-Port $server_port;
    proxy_set_header X-Request-Start $msec;
  }
  include /home/dokku/test/nginx.conf.d/*.conf;
}
upstream whiteboard { server 172.17.0.26:5000; }
server {
  listen      [::]:80;
  listen      80;
  server_name whiteboard.xxx.pw ;
  location    / {
    proxy_pass  http://whiteboard;
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection upgrade;
    proxy_set_header Host $http_host;
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_set_header X-Forwarded-For $remote_addr;
    proxy_set_header X-Forwarded-Port $server_port;
    proxy_set_header X-Request-Start $msec;
  }
  include /home/dokku/whiteboard/nginx.conf.d/*.conf;
}