DigitalOcean App Platform with container registry and image spec example

spec.yml

name: arman-test
region: nyc3 
services:
  -
    name: nginx
    image:                         
      registry_type: DOCR
      repository: my-nginx 
      tag: latest
    instance_size_slug: basic-xxs
    http_port: 80

Here are the steps to follow:

1. get a DO account and an API token
2. download the doctl CLI tool
3. install docker on your machine
4. download nginx hello world image via docker pull nginxdemos/hello
5. tag your downloaded image with docker tag <THE-NGINX-IMAGE-ID> registry.digitalocean.com/<YOUR-REGISTRY-NAME>/my-nginx
6. login to DO using doctl auth init
7. create your own docker registry on DO using doctl registry create <YOUR-REGISTRY-NAME>
8. push the nginx image to DO docker registry via docker push registry.digitalocean.com/<YOUR-REGISTRY-NAME>/my-nginx
9. download the above spec.yml file to disk and from the same location run doctl apps create --spec ./spec.yaml
10. go to DO apps dashboard to view the deploy progress

If all is working you will shortly see a deploy success status and the public URL for your app which should return a NGINX hello world page.