add timeout on docker username
add timeout on docker username

Signed-off-by: Kyle Spiers <3c25b01657254677d3e1a8fd1f0742c5d489bd39@spiers.me>

add additional error logging

Signed-off-by: Kyle Spiers <3c25b01657254677d3e1a8fd1f0742c5d489bd39@spiers.me>

docker/notary,docker/notary,endophage/notary,docker/notary,vdemeester/notary,HuKeping/notary,endophage/notary,jfrazelle/notary,HuKeping/notary,vdemeester/notary,jfrazelle/notary,endophage/notary,johnsandiford/notary,johnsandiford/notary,vdemeester/notary,HuKeping/notary,johnsandiford/notary,jfrazelle/notary