Bash script to configure multiple Self-hosted GitHub Runners

concurrent_runners.sh

#!/bin/bash
#                 _   _                 _     _
#   ___  ___ ___ | |_| |_ ______ _  ___| |__ / |
#  / __|/ __/ _ \| __| __|_  / _` |/ __| '_ \| |
#  \__ \ (_| (_) | |_| |_ / / (_| | (__| | | | |
#  |___/\___\___/ \__|\__/___\__,_|\___|_| |_|_|
#
#       Zac Scott (github.com/scottzach1)
#
# A quick and hacky script to configure n self-hosted GitHub runners.
# * Gist https://gist.github.com/scottzach1/e311654b7fe7115ba077016a5dc7b35d
# * Adapted from https://github.com/orgs/community/discussions/26769#discussioncomment-3539575

if [ "$EUID" -ne 0 ]
then
  echo "Please run as root"
  exit 1;
fi

set -e

export NAME=__fill_me_in__
export TOKEN=__fill_me_in__
export REPOSITORY=__fill_me_in__
export COUNT=5
export VERSION=2.317.0

for i in $(seq 1 $COUNT);
do
    user="runner-$NAME-$i"

    if [ ! -d "/home/$user" ] ; then
            echo "Adding $user";
            useradd -m -G sudo "$user";
    else
            echo "Using $user";
    fi

    cd "/home/$user" || exit 1;
    mkdir -p actions-runner;
    cd actions-runner || exit 1;
    curl -o "actions-runner-linux-x64-$VERSION.tar.gz" -L "https://github.com/actions/runner/releases/download/v$VERSION/actions-runner-linux-x64-$VERSION.tar.gz";
    tar xzf "./actions-runner-linux-x64-$VERSION.tar.gz";
    chown -R "$user" ./
    sudo -u "$user" bash -c "./config.sh --url '$REPOSITORY' --token '$TOKEN' --name '$NAME-$i' --unattended";
    ./svc.sh install "$user";
    ./svc.sh start "$user";
done;