Hi,
that error
/usr/local/bin/docker-compose: line 1: Not: command not found
is because there is no armv7l in the official github repo and the file that is create has only “Not Found.” in it.
use this if you want a newer version
sudo curl -L "https://github.com/javabean/arm-compose/releases/download/1.21.2/docker-compose-Linux-armv7l" -o /usr/local/bin/docker-compose