Configure containers to block lots of malware etc. hosts?

[sanjayankur31]

I use this for my qutebrowser block list:

https://github.com/StevenBlack/hosts

i was wondering if we should also use this in the /etc/hosts files for our containers to ensure that these hosts are basically just not accessible from them. I'm not sure if this is required or if GCJ etc. already block these, but if they don't, we can use this as a systemwide config?

It'll just make v2 a little more secure---we're likely to attract bad actors as our users increase.