I've run container with `docker run sameersbn/squid` command, noted the IP with `docker inspect X`. However, when I'm trying to test with `curl` it reads `ERR_ACCESS_DENIED`. ``` $ export http_proxy=http://172.17.0.3:3128 $ curl http://example.com/ ... <!-- ERR_ACCESS_DENIED --> ... ``` Is it possible to configure container to have the allow access by default? Or what's the easiest way to achieve that?