alpine确实是很精简，但是对于熟悉了centos和ununtu的个人来说，实在是不习惯。
因此，记录关于alpine的一些包安装，以及操作细节（逐渐补充）。

1. telnet

>>> docker exec -it CONTAINERID /bin/sh/app # telnet/bin/sh: telnet: not found/app # apk updatefetch http://dl-cdn.alpinelinux.org/alpine/v3.7/main/x86_64/APKINDEX.tar.gzfetch http://dl-cdn.alpinelinux.org/alpine/v3.7/community/x86_64/APKINDEX.tar.gzv3.7.0-243-gf26e75a186 [http://dl-cdn.alpinelinux.org/alpine/v3.7/main]v3.7.0-229-g087f28e29d [http://dl-cdn.alpinelinux.org/alpine/v3.7/community]OK: 9051 distinct packages available/app # apk add busybox-extras(1/1) Installing busybox-extras (1.27.2-r11)Executing busybox-extras-1.27.2-r11.post-installExecuting busybox-1.27.2-r7.triggerOK: 77 MiB in 64 packages/app # busybox-extras telnet localhost 6900