update docker-compose and its auto-completion to the latest release version (not installed as a container!)

update-docker-compose.sh

#!/bin/bash

latestReleaseUrl="$(curl -s https://api.github.com/repos/docker/compose/releases/latest | grep "docker-compose-Linux-x86_64\"" | grep browser_download_url | sed "s/.*\(https.*x86_64\).*/\1/")"

echo "installing $latestReleaseUrl"

sudo curl -L $latestReleaseUrl -o /usr/local/bin/docker-compose
sudo chmod +x /usr/local/bin/docker-compose

docker-compose version

sudo curl -L https://raw.githubusercontent.com/docker/compose/$(docker-compose version --short)/contrib/completion/bash/docker-compose -o /etc/bash_completion.d/docker-compose