修改后端映射的media目录后,重启服务后,前端服务会不停重启,报错日志如下:2026/01/13 07:27:03 [emerg] 1#1: host not found in upstream "backend" in /etc/nginx/conf.d/default.conf:10 nginx: [emerg] host not found in upstream "backend" in /etc/nginx/conf.d/default.conf:10 /docker-entrypoint.sh: /docker-entrypoint.d/ is not empty, will attempt to perform configuration /docker-entrypoint.sh: Looking for shell scripts in /docker-entrypoint.d/ /docker-entrypoint.sh: Launching /docker-entrypoint.d/10-listen-on-ipv6-by-default.sh 10-listen-on-ipv6-by-default.sh: info: Getting the checksum of /etc/nginx/conf.d/default.conf 10-listen-on-ipv6-by-default.sh: info: /etc/nginx/conf.d/default.conf differs from the packaged version /docker-entrypoint.sh: Sourcing /docker-entrypoint.d/15-local-resolvers.envsh /docker-entrypoint.sh: Launching /docker-entrypoint.d/20-envsubst-on-templates.sh /docker-entrypoint.sh: Launching /docker-entrypoint.d/30-tune-worker-processes.sh /docker-entrypoint.sh: Configuration complete; ready for start up 2026/01/13 07:27:07 [emerg] 1#1: host not found in upstream "backend" in /etc/nginx/conf.d/default.conf:10 nginx: [emerg] host not found in upstream "backend" in /etc/nginx/conf.d/default.conf:10