docker: take -dev version suffix into account

[ghost]

The other commit makes sharness tests work with my symlinked-into-gopath setup.

[ghost]

This fix is pretty important because it's making master green again!!11

[Kubuxu]

Could we just grep the version string with expected hash instead? This way if we choose other suffix (rc for example) it won't break again.

[ghost]

Something like sed -e s/(-\w)?//?

[Kubuxu]

You could use ipfs version --enc json and parse the commit using sed:

{"Version":"0.4.3-dev","Commit":"4fa85cc","Repo":"4","System":"amd64/linux","Golang":"go1.6.2"}

or ipfs version --commit | sed -e 's/.*-//'

[ghost]

Updated it to parse from ipfs version --enc json, the quotes got waay complicated so heredoc we go :)

[whyrusleeping]

bashy bashy bashy bash. LGTM