Failed to connect to docker

[azyshalom]

Failed to connect to docker using the example:
Get http://unix.sock/images/json?: dial tcp: lookup unix.sock on 172.31.0.2:53: no such host
`

go version

go version go1.7.3 linux/amd64

docker version

Client:
Version: 1.12.5
API version: 1.24
Go version: go1.6.4
Git commit: 7392c3b
Built: Fri Dec 16 02:30:42 2016
OS/Arch: linux/amd64

Server:
Version: 1.12.5
API version: 1.24
Go version: go1.6.4
Git commit: 7392c3b
Built: Fri Dec 16 02:30:42 2016
OS/Arch: linux/amd64

docker info

Containers: 3
Running: 1
Paused: 0
Stopped: 2
Images: 25
Server Version: 1.12.5
Storage Driver: aufs
Root Dir: /var/lib/docker/aufs
Backing Filesystem: extfs
Dirs: 133
Dirperm1 Supported: false
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
Volume: local
Network: bridge overlay null host
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Security Options: apparmor
Kernel Version: 3.13.0-106-generic
Operating System: Ubuntu 14.04.5 LTS
OSType: linux
Architecture: x86_64
CPUs: 2
Total Memory: 7.305 GiB
Name: ip-172-31-2-198
ID: 3RU6:PZJL:RDDY:CNJO:F2RR:NIFO:JOFP:UXE2:PALK:EXUW:DHAZ:SRRO
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): false
Username: jerbi
Registry: https://index.docker.io/v1/
WARNING: No swap limit support
Insecure Registries:
127.0.0.0/8

cat /etc/os-release

NAME="Ubuntu"
VERSION="14.04.5 LTS, Trusty Tahr"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 14.04.5 LTS"
VERSION_ID="14.04"
HOME_URL="http://www.ubuntu.com/"
SUPPORT_URL="http://help.ubuntu.com/"
BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/"

`

[azyshalom]

Tested on coreos and centos, same error

[faryon93]

same error on debian jessie

[hrzbrg]

#621 should solve it

[faide]

can people having this issue test my PR and see if it works for them ?

[hrzbrg]

Just applied it and build it. Works for me together with Registrator.
Thanks 👍

[niko83]

Reason of this issue is last change hashicorp/go-cleanhttp@a459706

Temporary workaround:

1. create folder
   vendor/github.com/fsouza/go-dockerclient
   with master content of this repo

2. and create folder
   vendor/github.com/hashicorp/go-cleanhttp
   with version of source code https://github.com/hashicorp/go-cleanhttp/tree/ad28ea4487f05916463e2423a55166280e8254b5

[fsouza]

@azyshalom now that #621 is merged, can you check if the issue is gone? Thanks!

[azyshalom]

Works great! thanks

[fsouza]

Nice, thank you for confirming!

[azyshalom]

@fsouza i still see this error on coreos 1235, docker 1.12.6.
it works fine on other platforms.
is it possible that http still use tr.Dial instead of tr.DialContext? i see that the code still exists.
Thanks.