fix(ci): Replace busybox with ubuntu to avoid "device or resource busy" failures #5750

	# These jobs can be skipped based on cached Google Cloud state disks,
	# and some of them just run on the `main` branch,
	# so the patch jobs always need to run on every PR.
	name: CI Docker

	on:
	pull_request:

	jobs:
	regenerate-stateful-disks:
	name: Zebra checkpoint / Run sync-to-checkpoint test
	runs-on: ubuntu-latest
	steps:
	- run: 'echo "No build required"'

	test-full-sync:
	name: Zebra tip / Run full-sync-to-tip test
	runs-on: ubuntu-latest
	steps:
	- run: 'echo "No build required"'

	lightwalletd-full-sync:
	name: lightwalletd tip / Run lwd-full-sync test
	runs-on: ubuntu-latest
	steps:
	- run: 'echo "No build required"'

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