How to ensure automatic container startup on system boot?

To have a Docker container start automatically when the system boots, you can use the --restart option when running the container. For example, the --restart unless-stopped flag will make Docker automatically restart the container after the host reboots, unless the container was stopped manually.

Example command:

docker run -d --restart unless-stopped your_image_name

You can also set up a systemd service to start the container at system startup, but the built-in Docker mechanism with --restart is usually simpler and more effective.