sudo apt-get update
W: Failed to fetch https://get.docker.com/ubuntu/dists/docker/main/binary-amd64/Packages server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none
openssl s_client -connect get.docker.com:443 -tls1 -debug
=> http://paste.ubuntu.com/10687412
my machine is Ubuntu 14.10
any ideas?