I am trying to build a docker image by using the ones in the repository however i haven't been able to run 'apt-get update' 'apt-get install' commands because it seems that the container is not connected to the internet. I think the problem is caused by the fact that i am using a wireless connection. Is there a way to configure the docker or lxc to use the wireless network instead of the ethernet.
I see two possibility:
1) Make sure your ip_forward is set to 1 (sysctl -w net.ipv4.ip_forward=1)
2) Make sure it is not a DNS issue: try docker run base ping google.com, if it does not work, you can set custom dns server: docker run -dns 8.8.8.8 base ping google.com.
I've had issues on Mint 15 (based on Ubuntu 13.04) which sound exactly like this. For me, the problem appeared after getting out of suspend. While my system had internet access, the docker containers did not. For me, a restart did the trick, but creacks solution might have worked as well...
来源：https://stackoverflow.com/questions/17002663/how-to-configure-docker-to-be-able-to-have-internet-access-via-wireless-connecti