Server UI gives timeout but `curl localhost:8080/v1` is responsive

Rancher 1.x
1

Docker version: 1.12.5
Rancher version: latest as of 1/1/2017 (1.3.3 i think?)
Host: Digital Ocean Ubuntu 14.04
Memory: 1GB

Two weeks ago, I was able to setup a Rancher and provision hosts. An hour ago, my rancher UI gives me an ERR_CONNECTION_TIMED_OUT through the browser.

I can run curl http://127.0.0.1:8080/v1 from the host machine and I get JSON no problem.
Also, when I run curl http://127.0.0.1:8080/login I get the login page as expected.

I would appreciate help fixing this. The symptoms are very similar to this issue: https://github.com/rancher/rancher/issues/1702
except in my case, I never rebooted my machine.

What I did to restart the rancher server

$ docker stop <mycontainerid>
$ docker run -d -v rancher_datavolume:/var/lib/mysql --restart=always -p 8080:8080 rancher/server:latest

More information
I don’t really know what I’m looking at but hopefully someone can see if there is a problem that I’m not seeing.

$ docker inspect c18 |grep IPAddress
            "SecondaryIPAddresses": null,
            "IPAddress": "172.17.0.2",
                    "IPAddress": "172.17.0.2",

$ iptables -L -n -t nat | grep 8080
MASQUERADE  tcp  --  172.17.0.2           172.17.0.2           tcp dpt:8080
DNAT       tcp  --  0.0.0.0/0            0.0.0.0/0            tcp dpt:8080 to:172.17.0.2:8080

$ sudo iptables -L -n --line-numbers -t nat

Chain PREROUTING (policy ACCEPT)
num  target     prot opt source               destination         
1    DOCKER     all  --  0.0.0.0/0            0.0.0.0/0            ADDRTYPE match dst-type LOCAL

Chain INPUT (policy ACCEPT)
num  target     prot opt source               destination         

Chain OUTPUT (policy ACCEPT)
num  target     prot opt source               destination         
1    DOCKER     all  --  0.0.0.0/0           !127.0.0.0/8          ADDRTYPE match dst-type LOCAL

Chain POSTROUTING (policy ACCEPT)
num  target     prot opt source               destination         
1    MASQUERADE  all  --  172.17.0.0/16        0.0.0.0/0           
2    MASQUERADE  tcp  --  172.17.0.2           172.17.0.2           tcp dpt:8080

Chain DOCKER (2 references)
num  target     prot opt source               destination         
1    RETURN     all  --  0.0.0.0/0            0.0.0.0/0           
2    DNAT       tcp  --  0.0.0.0/0            0.0.0.0/0            tcp dpt:8080 to:172.17.0.2:8080

Running docker ps

          COMMAND                  CREATED             STATUS              PORTS                              NAMES
c18c1d305403        rancher/server:latest   "/usr/bin/entry /usr/"   55 minutes ago      Up 55 minutes       3306/tcp, 0.0.0.0:8080->8080/tcp   determined_blackwell

Is there any more information I can provide?

Thanks.
-Paul