Docker: any way to list open sockets inside a running docker container?
<p>I would like to execute netstat inside a running docker container to see open TCP sockets and their statuses. But, on some of my docker containers, netstat is not available. Is there any way to get open sockets (and their statuses, and which IP addresses they are connected to if any) without using netstat, via some docker API? (BTW, my container uses docker-proxy - that is, not directly bridged)</p>

<p>I guess I could look at /proc file system directly, but at that point, I might as well docker cp netstat into the container and execute it. I was wondering if there was any facility that docker might provide for this.</p>