How to install Discourse in the AWS EC2 Instances(Ubuntu Server LTS)?

Installation
26

I entered the command, here is the output:

Chain INPUT (policy ACCEPT 9 packets, 648 bytes)
 pkts bytes target     prot opt in     out     source               destination 

Chain FORWARD (policy DROP 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source               destination 
16012  108M DOCKER-USER  all  --  *      *       0.0.0.0/0            0.0.0.0/0 
16012  108M DOCKER-ISOLATION-STAGE-1  all  --  *      *       0.0.0.0/0            0.0.0.0/0
 7953  107M ACCEPT     all  --  *      docker0  0.0.0.0/0            0.0.0.0/0            ctstate RELATED,ESTABLISHED
   86  4460 DOCKER     all  --  *      docker0  0.0.0.0/0            0.0.0.0/0  
 7973  807K ACCEPT     all  --  docker0 !docker0  0.0.0.0/0            0.0.0.0/0
    0     0 ACCEPT     all  --  docker0 docker0  0.0.0.0/0            0.0.0.0/0 

Chain OUTPUT (policy ACCEPT 8 packets, 600 bytes)
 pkts bytes target     prot opt in     out     source               destination 

Chain DOCKER (1 references)
 pkts bytes target     prot opt in     out     source               destination 
    0     0 ACCEPT     tcp  --  !docker0 docker0  0.0.0.0/0            172.17.0.2           tcp dpt:443
   15   780 ACCEPT     tcp  --  !docker0 docker0  0.0.0.0/0            172.17.0.2           tcp dpt:80

Chain DOCKER-ISOLATION-STAGE-1 (1 references)
 pkts bytes target     prot opt in     out     source               destination 
 7973  807K DOCKER-ISOLATION-STAGE-2  all  --  docker0 !docker0  0.0.0.0/0            0.0.0.0/0
16012  108M RETURN     all  --  *      *       0.0.0.0/0            0.0.0.0/0   

Chain DOCKER-ISOLATION-STAGE-2 (1 references)
 pkts bytes target     prot opt in     out     source               destination 
    0     0 DROP       all  --  *      docker0  0.0.0.0/0            0.0.0.0/0  
 7973  807K RETURN     all  --  *      *       0.0.0.0/0            0.0.0.0/0   

Chain DOCKER-USER (1 references)
 pkts bytes target     prot opt in     out     source               destination 
16012  108M RETURN     all  --  *      *       0.0.0.0/0            0.0.0.0/0   

CONTAINER ID        IMAGE                 COMMAND             CREATED             STATUS              PORTS                                      NAMES
1ddff40f95d2        local_discourse/app   "/sbin/boot"        4 minutes ago       Up 4 minutes        0.0.0.0:80->80/tcp, 0.0.0.0:443->443/tcp   app