docker-node-activate.service

[Unit]
Description=Activate Docker Swarm Node on Startup
Wants=network-online.target
After=network.target docker.service network-online.target

[Service]
Type=oneshot
ExecStart=/usr/local/bin/swarm-node-activate.sh
# Ensures the script waits for Docker to be fully operational
Restart=on-failure
RestartSec=5s

[Install]
WantedBy=multi-user.target