我正在考虑在 fpm-alpine 容器上设置 laravel。遇到一个问题，下面的 Dockerfile 会产生一些错误......
FROM php:7-fpm-alpine
# install extensions needed for Laravel
RUN apk --update add \
php7-mysqli \
php7-mcrypt \
php7-mbstring \
rm /var/cache/apk/*
产生的错误有：
Building fpm
Step 1 : FROM php:7-fpm-alpine
---> 9e6811cb8bac
Step 2 : RUN apk --update add php7-mysqli php7-mcrypt php7-mbstring rm /var/cache/apk/*
---> Running in 87364957eb57
fetch http://dl-cdn.alpinelinux.org/alpine/v3.3/main/x86_64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/v3.3/community/x86_64/APKINDEX.tar.gz
ERROR: unsatisfiable constraints:
/var/cache/apk/* (missing):
required by: world[/var/cache/apk/*]
php7-mbstring (missing):
required by: world[php7-mbstring]
php7-mcrypt (missing):
required by: world[php7-mcrypt]
php7-mysqli (missing):
required by: world[php7-mysqli]
rm (missing):
required by: world[rm]
ERROR: Service 'fpm' failed to build: The command '/bin/sh -c apk --update add php7-mysqli php7-mcrypt php7-mbstring rm /var/cache/apk/*' returned a non-zero code: 5
我可以搜索这些包名称并在 alpine linux 网站上找到它们 https://pkgs.alpinelinux.org/package/testing/x86_64/php7-mcrypt。关于如何解决这个问题有什么想法吗？就像它没有更新 apt 缓存...但添加了 LS 我可以看到那里的内容：
Building fpm
Step 1 : FROM php:7-fpm-alpine
---> 9e6811cb8bac
Step 2 : RUN apk update
---> Using cache
---> 9ef09f3aa2a2
Step 3 : RUN ls /var/cache/apk
---> Running in e126a083a306
APKINDEX.5a59b88b.tar.gz
APKINDEX.7c1f02d6.tar.gz
我能做些什么来解决这个问题有什么想法吗？
基础 Docker 镜像可能引用了不正确的存储库。
将正确的存储库传递给apk add像这样的命令：
RUN apk add --update \
--repository http://dl-cdn.alpinelinux.org/alpine/edge/main \
--repository http://dl-cdn.alpinelinux.org/alpine/edge/community \
php7-mysqli php7-mcrypt php7-mbstring
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