Docker-Compose update script

update.sh

#!/bin/bash
confirm() {
    # call with a prompt string or use a default
    read -r -p "${1:-Are you sure? [y/N]} " response
    case "$response" in
        [yY][eE][sS]|[yY])
            true
            ;;
        *)
            false
            ;;
    esac
}

export DOCKER_CLIENT_TIMEOUT=120
export COMPOSE_HTTP_TIMEOUT=120

echo "Pulling latest contrainer images" && docker-compose pull && echo "Recreating updated contrainers"  && docker-compose up -d && echo "Current docker disk usage" && docker system df && confirm "Would you like to prune dangling images? [y/N]" && docker system prune