一个安装错误

[wutong233]

fetch http://dl-cdn.alpinelinux.org/alpine/v3.11/main/x86_64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/v3.11/community/x86_64/APKINDEX.tar.gz
WARNING: Ignoring http://dl-cdn.alpinelinux.org/alpine/v3.11/main/x86_64/APKINDEX.tar.gz: temporary error (try again later)
nginx (missing):
required by: world[nginx]
WARNING: Ignoring http://dl-cdn.alpinelinux.org/alpine/v3.11/community/x86_64/APKINDEX.tar.gz: temporary error (try again later)
ERROR: unsatisfiable constraints:
The command '/bin/sh -c apk add --no-cache nginx && mkdir /run/nginx && chown -R www-data:www-data cache/ config/ && mv default.conf /etc/nginx/conf.d && mv php.ini /usr/local/etc/php' returned a non-zero code: 1

求解