There's already a ton of thesee on the web, I'm just hosting one for my own intereests without having to reinvent the wheel or, worse, have to remember where I found it.
- Go to your Portainer instance
- Go to "Settings" -> "App Templates"
- Click the url field and paste in the following:
https://raw.githubusercontent.com/mackmoe/portainer-app-template-megalist/main/default_template.json - Click "Save settings"
- Go back to to "Home" again and select your enviroment
- Click "Application Templates" on the left pane
- Select the stack you want to deploy to
- Click "Deploy the template"