Make imager sh-compatible.

[KajWiik]

# sh image /dev/sdc
image: 8: [: latest: unexpected operator
ALPINEBOX: Getting release latest...
ALPINEBOX: Writing https://github.com/psy0rz/alpinebox/releases/download/latest/alpine.img.gz to disk /dev/sdc ...
/usr/bin/wget
--2024-09-28 20:15:34--  https://github.com/psy0rz/alpinebox/releases/download/latest/alpine.img.gz
Resolving github.com (github.com)... 140.82.121.3
Connecting to github.com (github.com)|140.82.121.3|:443... connected.
HTTP request sent, awaiting response... 404 Not Found
2024-09-28 20:15:35 ERROR 404: Not Found.


gzip: stdin: unexpected end of file

The fix is to use implicitly bash and not dash via sh in some systems (Ubuntu):

bash image /dev/sdc

So, this is just a suggestion to edit the README a little... Otherwise the installer looks fantastic!

[psy0rz]

Thats a good point, ill try to change the script so its sh-compatible.