Deploy with wagtail

New to DO, I try to deploy a dev app with Wagtail(django) and Docker-Compose.

I work on windows 10. Also, I can run DOCTL commands from PowerShell.

Mainly I struggle to find a workflow to link my application to DO.

I tried to follow tutorials django-docker  which  After: set DIGITAL_OCEAN_ACCESS_TOKEN=[your_digital_ocean_token]

Propose to create a new Droplet with Docker pre-installed … but with a code:

curl -X POST \ -H 'Content-Type: application/json' \ -H 'Authorization: Bearer '$DIGITAL_OCEAN_ACCESS_TOKEN'' \ -d '{"name":"django-docker","region":"sfo3","size":"s-2vcpu-4gb","image":"docker-20-04"}' \ "https://api.digitalocean.com/v2/droplets"

This code is rather confusing for me, as when I access docker-pre-installed I can only create droplets, preferably by selecting Docker from Marketplace or with Ubunto18. I don’t note any shell and the console option appears only after the droplet was already created.

Also confusing is how to run the curl command. I didn’t find it in the DOCTL commands.

Since, I didn’t manage, I tried to jump over this phase by simply setting SSL and create a droplet with docker settings. Which worked just fine.

Next I run:

cat ~/.ssh/id_rsa.pub > ~/.ssh/authorized_keys
cat ~/.ssh/id_rsa

I closed and opened a new shell to run:

set PRIVATE_KEY='....'

Next I run: .

ssh-add - <<< "${PRIVATE_KEY}"

and got ``` “Missing file specification after redirection operator. At line:1 char:11”

The above is the last code line before I can upload source code and create an image. 
Any tip on how I should proceed would be highly appreciated.