Build container FROM golang:1.7.3

[awh]

Fixes #2522.

[awh]

golint appears to have sprouted some additional checks which we need to address (or disable)

[awh]

See #2522 (comment) before merging

[awh]

I have tested this successfully with Docker 1.6.0 -> 1.12.3 inclusive, to make sure the malformed host header fix works as intended:

for v in 1.9.0 1.9.1 1.10.0 1.10.1 1.10.2 1.10.3 1.11.0 1.11.1 1.11.2 1.12.0 1.12.1 1.12.2 1.12.3 1.8.0 1.8.1 1.8.2 1.8.3 1.7.1 1.6.2 1.6.1 1.6.0; do wget https://get.docker.com/builds/Linux/x86_64/docker-$v.tgz; done

for file in *.tgz; do tar -x -z --one-top-level -f $file; done

for d in $(find -type f -name docker); do sudo $d -H=unix:///var/run/weave/weave.sock version > /dev/null  || echo $d failed; done