Install balena-engine

install_balena_engine.sh

#!/bin/bash

# Special thanks for @rgaudin to share your project
# based on https://github.com/rgaudin/bard-image

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

REPO_URL="https://raw.githubusercontent.com/bergpb/bard-image/main"

# install balenaEngine
echo "install balena-engine"
curl -sL https://github.com/balena-os/balena-engine/releases/download/v18.9.13/balena-engine-v18.9.13-armv6l.tar.gz | tar xzv -C /usr/local/bin/ --strip-components=2
groupadd balena-engine

# Add files listed bellow
wget -O /etc/systemd/system/balena.service $REPO_URL/balena.service
wget -O /etc/systemd/system/balena.socket $REPO_URL/balena.socket

systemctl daemon-reload
systemctl start balena.socket
systemctl enable balena.socket
systemctl start balena
systemctl enable balena
usermod -aG balena-engine pi  # (or whatever user) to enable non-root balena mgmt
ln -sf /var/run/balena-engine.sock /var/run/docker.sock

# install docker-compose
curl -L "https://github.com/docker/compose/releases/download/v2.5.0/docker-compose-linux-armv6" -o /usr/local/bin/docker-compose
chmod +x /usr/local/bin/docker-compose

echo "Installation finished"

This only will works on a specific version of raspbian, more information here: balena-os/balena-engine#136