https://login.docker.com/oauth/token block是几个意思？
Resolving login.docker.com (login.docker.com)... 104.244.43.57, 2a03:2880:f12c:183:face:b00c:0:25de Connecting to login.docker.com (login.docker.com)|104.244.43.57|:443... failed: Connection timed out. Connecting to login.docker.com (login.docker.com)|2a03:2880:f12c:183:face:b00c:0:25de|:443... failed: Network is unreachable.
update：交大的docker hub镜像也关了。呵呵。
