The build server now uses a Docker based build setup for the full builds. Thus it’s trivial to reproduce if you want to do official-ish builds for all supported architectures (minus Solaris, because it doesn’t work properly in Go1.3).
In short: on the latest master, as a user that is a member of the
docker group and has write access to the checked out source directory,
./build.sh docker-init ./build.sh docker-all
This has the advantage of creating binaries that are byte for byte identical to the ones server by the build server.