在docker-compose up -d時，
出現了以下錯誤：
Pulling judge-server (registry.cn-hangzhou.aliyuncs.com/onlinejudge/judge_server:)... ERROR: Get "https://registry.cn-hangzhou.aliyuncs.com/v2/": net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)
在
docker-compose up -d時， 出現了以下錯誤：Pulling judge-server (registry.cn-hangzhou.aliyuncs.com/onlinejudge/judge_server:)... ERROR: Get "https://registry.cn-hangzhou.aliyuncs.com/v2/": net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)