$ sudo systemctl stop docker $ sudo docker -d -D
DEBU[0282] Error contacting registry https://registry-1.docker.io/v1/: Get https://dseasb33srnrn.cloudfront.net/registry-v2/docker/registry/v2/blobs/sha256/a3/a3ed95caeb02ffe68cdd9fd84406680ae93d633cb16422d00e8a7c22955b46d4/data?Expires=1449474474&Signature=Gw6Y0xqjZT-1S8kPpNg9Z6GA~SH6SunDvh3eNGWvDQtBrotU9Qv6a3Mr6sAkP5L84zM32lsTxGrIehFKyEuwVncRy1sfEI-4Ggiuvqedwaw61HFYYBefoQJHDUtHOxUZkOJ6AuUlxOJeKhfHyLDMmPf3H1NSQ8U8L5Mf8rUXL0M_&Key-Pair-Id=APKAJECH5M7VWIS5YZ6Q: net/http: TLS handshake timeout
$ echo "DOCKER_OPTS="$DOCKER_OPTS --registry-mirror=http://f2d6cb40.m.daocloud.io"" | sudo tee -a /etc/default/docker
$ sudo service docker restart