installkernel: no checksum for file sbin/installkernel
On Alpine edge x86_64:
alpine:~$ sudo apk add installkernel
(1/1) Installing installkernel (3.5-r0)
WARNING: installkernel-3.5-r0: no checksum for file sbin/installkernel
Executing busybox-1.32.0-r3.trigger
1 error; 338 MiB in 127 packages