之前按照论坛里面的帖子说明，用下面的配置文件可以成功反代使用， 
    location /v2/ {
        proxy_pass https://registry-1.docker.io;
        proxy_set_header Host registry-1.docker.io;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_buffering off;
        proxy_request_buffering off;
        pr...