How do I make Docker start automatically on startup?

The process to make Docker start automatically on startup is dependent on the operating system you are using.

1. Windows

- Open Task Manager by pressing `Ctrl+Shift+Esc`.
- Go to the Startup tab.
- Look for Docker for Windows in the list.
- If it is disabled, click on it and then click on the Enable button at the bottom-right corner.

1. Mac

- Open Docker for Mac and go to `Preferences`.
- Click on `General`.
- Check the box `Start Docker when you log in`.

1. Linux

The default installation of Docker uses `systemd` to manage Docker services, including starting Docker automatically. If you made any changes to Docker service settings, you can use the following command to enable Docker on startup:

```
sudo systemctl enable docker
```

To verify if the Docker service is set to start on boot, use the following command:

```
sudo systemctl is-enabled docker
```

This should return `enabled`.

Please replace `docker` with the name of your docker service if you have named it differently.