local host can't connect to notebooks on fresh install

this is what I run:

`sudo GPU=0 ./agmb-docker run -d bethgelab/jupyter-deeplearning-x:cuda8.0-cudnn5`

and this is the output
```

ret run -d bethgelab/jupyter-deeplearning-x:cuda8.0-cudnn5 run
1st CMD run

* Setting user name to: root
* Setting user ID to: 0
* Setting user groups to: bethgelab:1019,cin:1011,sudo
* Setting password to: pw
* Setting SSH port binding to: 57293 (to set manually add -p 57293:22 as flag)
* Setting Notebook port binding to: 683 (to set manually add -p 683:8888 as flag)

You can now open the notebook on the host machine by directing your browser to

http://localhost:683

or, from a remote system, to

http://192.168.1.106:683

In the latter case make sure that your local machine can see the server! Otherwise you might have to configure an SSH tunnel first.

9737c301b1c51853e5101d2161032074a8de23353fc07060880f503287e68f01
```

I have to put the sudo before the command else way I get this error:

`Error: Cannot connect to the Docker daemon. Is the docker daemon running on this host?`

going to 192.168.1.106:683 gives me:

```
Firefox can't establish a connection to the server at 192.168.1.106:683.

The site could be temporarily unavailable or too busy. Try again in a few moments.
If you are unable to load any pages, check your computer's network connection.
If your computer or network is protected by a firewall or proxy, make sure that Firefox is permitted to access the Web.
```

I'm on Ubuntu, gtx 1070 with cuda and cudnn installed.

what could be the problem?

thanks in advance!