Fails to start as a GitHub Action Service

[leighmcculloch]

The quickstart image can be used in GitHub Actions workflows by starting the image in a step, but as a Service, for some reason Horizon appears to fail to start.

For example:

   quickstart   | supervisor: 2023-12-22 00:58:55,625 INFO spawned: 'horizon' with pid 618
   quickstart   | supervisor: 2023-12-22 00:58:55,698 INFO exited: horizon (exit status 1; not expected)
   quickstart   | supervisor: 2023-12-22 00:58:55,750 INFO gave up: horizon entered FATAL state, too many start retries too quickly

https://github.com/leighmcculloch/exp-quickstart-in-actions-services/actions/runs/7295600134/job/19882754123

Reported by @chadoh as occurring in this PR:

• Add generation of contract clients and an AssembledTransaction abstraction js-stellar-sdk#891

cc @chadoh

[leighmcculloch]

In the interim it's possible to replace the service with a run step that runs docker run -d ..., where the -d causes it to run in the background. An example:

- run: docker run --rm -d -p "8000:8000" -p "11626:11626" --name stellar stellar/quickstart:testing --local

That is what we do in the quickstart images own tests:

quickstart/.github/workflows/build.yml

Lines 317 to 318 in ff3dd50

	- name: Run Quickstart Image
	run: docker run --platform linux/${{ inputs.arch }} --rm -d -p "8000:8000" -p "11626:11626" --name stellar $IMAGE --${{ matrix.network }} ${{ matrix.options }}

[leighmcculloch]

This problem is fixed by:

• Fix unintended environment variable config passthrough to services #540