docker-compose shell function wrapper to wait for all containers to become healthy

docker-compose.sh

# Uses `alerter` from https://github.com/vjeantet/alerter
# Uses `healthy` from https://github.com/arnested/go-healthy
# Uses `mapfile` bash builtin introduced in bash4

docker-compose () {
    show_success_message () {
        message="'${COMPOSER_PROJECT_NAME:-$(basename "$(git root)")}' is healthy."
        
        # Run in sub shell to get rid of info about background job.
        (nohup alerter -message "${message}" -title 'Docker Compose' -appIcon /Applications/Docker.app/Contents/Resources/AppIcon.icns -sound Glass < /dev/null &> /dev/null &)
    }

    command docker-compose "$@"
    exitcode=$?
    
    if [ "$exitcode" != "0" ]; then
        return $exitcode
    fi
    
    # Only wait if for containers to become healthy if docker-compose
    # command is `up` and we run in an interactive shell.
    if [ "$1" = "up" ] && [[ $- =~ i ]]; then
        mapfile -t container_ids < <(command docker-compose ps -q)
        echo -n "Waiting for containers to become healthy... "
        healthy "${container_ids[@]}" && show_success_message && echo "done"
    fi

    return $exitcode
}