patches gosu version
patches gosu version

* gosu 1.7 has been compiled with go 1.5.1, while 1.8 has been compiled with go 1.6.1
** 1.5.1 leads to a fatal error: rt_sigaction failure, runtime.setsig(0x40, 0x690d8, 0x1) in conjunction with the qemu binary

encodeering/docker-postgres