[alpine]源配置¶
问题¶
默认alpine源地址可通过/etc/apk/repositories文件查看
$ docker run -it alpine
/ # cd /etc/apk/
/etc/apk # pwd
/etc/apk
/etc/apk # ls
arch keys protected_paths.d repositories world
/etc/apk #
/etc/apk # cat repositories
http://dl-cdn.alpinelinux.org/alpine/v3.11/main
http://dl-cdn.alpinelinux.org/alpine/v3.11/community
使用默认源无法下载应用，以NodeJS为例
/etc/apk # apk add nodejs
fetch http://dl-cdn.alpinelinux.org/alpine/v3.11/main/x86_64/APKINDEX.tar.gz
ERROR: http://dl-cdn.alpinelinux.org/alpine/v3.11/main: temporary error (try again later)
WARNING: Ignoring APKINDEX.70f61090.tar.gz: No such file or directory
fetch http://dl-cdn.alpinelinux.org/alpine/v3.11/community/x86_64/APKINDEX.tar.gz
ERROR: http://dl-cdn.alpinelinux.org/alpine/v3.11/community: temporary error (try again later)
WARNING: Ignoring APKINDEX.ca2fea5b.tar.gz: No such file or directory
ERROR: unsatisfiable constraints:
nodejs (missing):
required by: world[nodejs]
解析¶
参考Alpine Linux 源使用帮助，替换成国内镜像源
/etc/apk # sed -i 's/dl-cdn.alpinelinux.org/mirrors.ustc.edu.cn/g' /etc/apk/repositories
/etc/apk #
/etc/apk # cat repositories
http://mirrors.ustc.edu.cn/alpine/v3.11/main
http://mirrors.ustc.edu.cn/alpine/v3.11/community
配置NodeJS环境如下
/etc/apk # apk add nodejs
fetch http://mirrors.ustc.edu.cn/alpine/v3.11/main/x86_64/APKINDEX.tar.gz
fetch http://mirrors.ustc.edu.cn/alpine/v3.11/community/x86_64/APKINDEX.tar.gz
(1/7) Installing ca-certificates (20191127-r1)
(2/7) Installing c-ares (1.15.0-r0)
(3/7) Installing libgcc (9.2.0-r3)
(4/7) Installing nghttp2-libs (1.40.0-r0)
(5/7) Installing libstdc++ (9.2.0-r3)
(6/7) Installing libuv (1.34.0-r0)
(7/7) Installing nodejs (12.15.0-r1)
Executing busybox-1.31.1-r9.trigger
Executing ca-certificates-20191127-r1.trigger
OK: 36 MiB in 21 packages
/etc/apk #
/etc/apk # apk add npm
(1/1) Installing npm (12.15.0-r1)
Executing busybox-1.31.1-r9.trigger
OK: 64 MiB in 22 packages
dockerfile¶
编写一个Dockerfile脚本，实现镜像源替换
FROM alpine:latest
LABEL maintainer "zhujian <zjzstu@github.com>"
RUN set -eux && sed -i 's/dl-cdn.alpinelinux.org/mirrors.ustc.edu.cn/g' /etc/apk/repositories
构建¶
$ docker build -t zjzstu/alpine:latest .
Sending build context to Docker daemon 2.048kB
Step 1/3 : FROM alpine:latest
---> e7d92cdc71fe
Step 2/3 : LABEL maintainer "zhujian <zjzstu@github.com>"
---> Running in e887d20623cd
Removing intermediate container e887d20623cd
---> 260632029e45
Step 3/3 : RUN set -eux && sed -i 's/dl-cdn.alpinelinux.org/mirrors.ustc.edu.cn/g' /etc/apk/repositories
---> Running in 0481eecdd0e9
+ sed -i s/dl-cdn.alpinelinux.org/mirrors.ustc.edu.cn/g /etc/apk/repositories
Removing intermediate container 0481eecdd0e9
---> 6c891a208c35
Successfully built 6c891a208c35
运行¶
$ docker run -it zjzstu/alpine
/ # node
/bin/sh: node: not found
/ # apk add nodejs
fetch http://mirrors.ustc.edu.cn/alpine/v3.11/main/x86_64/APKINDEX.tar.gz
fetch http://mirrors.ustc.edu.cn/alpine/v3.11/community/x86_64/APKINDEX.tar.gz
(1/7) Installing ca-certificates (20191127-r1)
(2/7) Installing c-ares (1.15.0-r0)
(3/7) Installing libgcc (9.2.0-r3)
(4/7) Installing nghttp2-libs (1.40.0-r0)
(5/7) Installing libstdc++ (9.2.0-r3)
(6/7) Installing libuv (1.34.0-r0)
(7/7) Installing nodejs (12.15.0-r1)
Executing busybox-1.31.1-r9.trigger
Executing ca-certificates-20191127-r1.trigger
OK: 36 MiB in 21 packages
/ #
/ # node -v
v12.15.0