Adding known issue of etc/docker/certs documentation.

[abbytiz]

@cftorres @aaron-prindle @nkubala

[abbytiz]

fixes #21

[aaron-prindle]

LGTM

[duggelz]

rm -rf /etc/docker? This sounds like something important? What exactly am I wiping out?

$ sudo ls -al /etc/docker total 24 drwx------ 2 root root 4096 Sep 8 2015 . drwxr-xr-x 186 root root 16384 Aug 18 16:10 .. -rw------- 1 root root 281 Sep 8 2015 key.json $ sudo cat /etc/docker/key.json { "crv": "P-256", "d": "long string off stuff", "kid": "long string of stuff", "kty": "EC", "x": "long string of stuff", "y": "long string of stuff" } 

[nkubala]

Hmm, I wonder if we could get away with doing something like sudo chmod -R 755 /etc/docker? @aaron-prindle @dlorenc @duggelz WDYT