How setup nginx reverse proxy?

[HuJK]

command:

docker run -it -v /var/run/docker.sock:/var/run/docker.sock \
               -v /root/codenvy:/data \
               codenvy/cli start

Error:

         mem (1.5 GiB):           [OK]
         disk (100 MB):           [OK]
         port 80 (http):          [ALREADY IN USE] 
         port 443 (https):        [ALREADY IN USE] 
         port 2181 (zookeeper):   [AVAILABLE] 
         port 5000 (registry):    [AVAILABLE] 
         port 23750 (socat):      [AVAILABLE] 
         port 23751 (swarm):      [AVAILABLE] 
         port 32000 (jmx):        [AVAILABLE] 
         port 32001 (jmx):        [AVAILABLE]

But I had already running nginx on it. How to make it don't bind 80 and 443 port on host network?
I will set reverse proxy on specific domain name on nginx to reverse proxy to it later.