Fix docker version specifier (#1108)
Fix docker version specifier (#1108)

* Fix Docker version specifier.

- The download URL[1] does not contain a leading 'v'.
- The major version is 1.

[1] https://github.com/docker/docker/releases/tag/v1.10.3

* Drop -S and and -f in build.Dockerfile curl commands.

- `-f` (`--fail`) turns HTTP error response codes into a non-zero exit
  code, making curl fail early and properly. While the documentation
  mentions that there is supposed to be no output, we do see an error
  message.
- `-S` (`--show-error`) is only meaningful when used together with `-s`
  (`--silent`). We do not want to go silent but see the progress bar
  though.

seryl/traefik,mmatur/traefik,Nitro/traefik,containous/traefik,Nitro/traefik,EmileVauge/traefik,Regner/traefik,simbas/traefik,martinbaillie/traefik,nmengin/traefik,mmatur/traefik,CyrilPeponnet/traefik,seryl/traefik,aantono/traefik,martinbaillie/traefik,containous/traefik,vdemeester/traefik,timoreimann/traefik,marco-jantke/traefik,martinbaillie/traefik,simbas/traefik,martinbaillie/traefik,EmileVauge/traefik,atbore-phx/traefik,CyrilPeponnet/traefik,thomasbach76/traefik,akanto/traefik,mildis/traefik,seryl/traefik,akanto/traefik,bparli/traefik,ldez/traefik,adityacs/traefik,vholovko/traefik,yyekhlef/traefik,dtomcej/traefik,ldez/traefik,marco-jantke/traefik,thomasbach76/traefik,mihaitodor/traefik,adityacs/traefik,mvdstam/traefik,bparli/traefik,simbas/traefik,yyekhlef/traefik,jangie/traefik,vdemeester/traefik,jangie/traefik,mihaitodor/traefik,vdemeester/traefik,yyekhlef/traefik,SantoDE/traefik,akanto/traefik,aantono/traefik,vholovko/traefik,nmengin/traefik,mildis/traefik,kekoav/traefik,SantoDE/traefik,Regner/traefik,vholovko/traefik,tanyadegurechaff/traefik,thomasbach76/traefik,atbore-phx/traefik,jangie/traefik,dtomcej/traefik,atbore-phx/traefik,mvdstam/traefik,marco-jantke/traefik,tanyadegurechaff/traefik,owen/traefik,vdemeester/traefik,CyrilPeponnet/traefik,aantono/traefik,timoreimann/traefik,aantono/traefik,Nitro/traefik,tanyadegurechaff/traefik,bparli/traefik,dtomcej/traefik,FriggaHel/traefik,owen/traefik,dtomcej/traefik,SantoDE/traefik,kekoav/traefik,nmengin/traefik,mihaitodor/traefik,tanyadegurechaff/traefik,jangie/traefik,owen/traefik,mmatur/traefik,aantono/traefik,SantoDE/traefik,owen/traefik,mvdstam/traefik,thomasbach76/traefik,akanto/traefik,FriggaHel/traefik,kekoav/traefik,containous/traefik,timoreimann/traefik,Regner/traefik,ldez/traefik,mihaitodor/traefik,atbore-phx/traefik,CyrilPeponnet/traefik,mmatur/traefik,timoreimann/traefik,mvdstam/traefik,adityacs/traefik,EmileVauge/traefik,marco-jantke/traefik,FriggaHel/traefik,FriggaHel/traefik,vholovko/traefik,bparli/traefik,ldez/traefik,mildis/traefik,seryl/traefik,nmengin/traefik,kekoav/traefik,containous/traefik,EmileVauge/traefik,Regner/traefik,adityacs/traefik,simbas/traefik,mildis/traefik,yyekhlef/traefik,Nitro/traefik