they were added by mistake

Otherwise pipelines such as 'wget http://to/foo.iso | uniso' might
report 'pipe error' as the file is not fully consumed.

the use of \+ is a GNU BRE extension that is not supported in musl.

the use of \+ is a GNU BRE extension that is not supported in musl.

the use of \+ is a GNU extension that is not supported in musl.

Running syslinux on a device that is mounted causes undefined behaviour.
We have been 'lucky' up til now but it is known that this can corrupt
syslinux.cfg.

This should fix #3137

ref #2862

add support for setup-alpine from within a container.

when running in lxc we skip config of:
 - keymap
 - hostname
 - ntp
 - disk
 - apk cache
 - lbu

ref #3057

this makes it work in lxcontainers.

This is what upstream musl does.

apk now sends progressbar to stdout instead of stderr

we need uninstall .setup*

it is tmpfs and we know it will be removed on reboot. Infact, we want
it to be removed on reboot.

ref #2893

We should show 'diff' subcommand in help text.

This is to avoid the message:
ERROR: You tried to add a non-repository package to system, but it would
 be lost on next reboot. Enable package caching (apk cache --help) or use
 --force if you know what you are doing.

but accept it for compat reasons

aterm no longer exist and 'st' is the simplest terminal