Move the deploy test action to a custom flowzone test

[thgreasi]

Change-type: patch

[klutchell]

@thgreasi I was wrong, since we are looking for the published docker image this should actually be a custom publish step that runs after docker publish.

[thgreasi]

Fine @klutchell let me try it

[klutchell]

Hmm, it looks like custom publish runs at the same time as docker publish in Flowzone, so the image is not available yet.

We could change the Flowzone behaviour, or add a wait loop to keep inspecting the manifest until it is available.

[klutchell]

something like

image="ghcr.io/balena-io/deploy-to-balena-action:${{ github.event.pull_request.head.sha }}"
while ! docker buildx imagetools inspect "${image}" >/dev/null 2>&1
do
  echo "waiting for ${image}..."
  sleep $(((RANDOM % 10) + 10))
done

[klutchell]

LGTM

[thgreasi]

you are awesome @klutchell :clap: