https://zhuanlan.zhihu.com/p/116084967

一定要update

apk search curl

WARNING: Ignoring APKINDEX.2c4ac24e.tar.gz: No such file or directory
WARNING: Ignoring APKINDEX.40a3604f.tar.gz: No such file or directory
/ # apk update
fetch http://dl-cdn.alpinelinux.org/alpine/v3.12/main/x86_64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/v3.12/community/x86_64/APKINDEX.tar.gz
v3.12.1-24-g9d31f224d7 [http://dl-cdn.alpinelinux.org/alpine/v3.12/main]
v3.12.1-20-g868070ed30 [http://dl-cdn.alpinelinux.org/alpine/v3.12/community]
OK: 12744 distinct packages available
/ # apk search curl
lua5.2-curl-0.3.11-r1
flickcurl-libs-1.26-r1
flickcurl-dev-1.26-r1
curl-7.69.1-r1
uwsgi-alarm_curl-2.0.18-r8
libcurl-7.69.1-r1
php7-curl-7.3.24-r0
flickcurl-doc-1.26-r1
py3-curl-7.43.0.5-r0
curl-dev-7.69.1-r1
qemu-block-curl-5.0.0-r2
flickcurl-1.26-r1
lua5.3-curl-0.3.11-r1
asterisk-curl-16.7.0-r0
curl-dbg-7.69.1-r1
uwsgi-curl_cron-2.0.18-r8
lua5.1-curl-0.3.11-r1
lua-curl-0.3.11-r1
curl-static-7.69.1-r1
curl-doc-7.69.1-r1
strongswan-5.8.4-r2
collectd-curl-5.9.2-r0
gst-plugins-bad-1.16.2-r8

/ # apk add curl
fetch https://mirrors.aliyun.com/alpine/v3.6/main/x86_64/APKINDEX.tar.gz
fetch https://mirrors.aliyun.com/alpine/v3.6/community/x86_64/APKINDEX.tar.gz
(1/6) Installing libressl2.5-libcrypto (2.5.5-r2)
(2/6) Installing ca-certificates (20161130-r3)
(3/6) Installing libssh2 (1.8.2-r0)
(4/6) Installing libressl2.5-libssl (2.5.5-r2)
(5/6) Installing libcurl (7.61.1-r2)
(6/6) Installing curl (7.61.1-r2)
Executing busybox-1.31.1-r9.trigger
Executing ca-certificates-20161130-r3.trigger
OK: 9 MiB in 20 packages