fix: running the goat locally

[JonZeolla]

Contributor Comments

This fixes a regression from e40e851 where it checks for a github action-only variable in a way that fails the overall workload.

Manual testing

Tested it locally with a task build and task lint which now works but when testing I had to temporarily remove the following otherwise it would pull from docker hub and overwrite the local build

goat/Task/Taskfile.yml

Lines 99 to 102 in f5005e6

	preconditions:
	- sh: |
	docker pull seiso/goat:latest || \
	echo "Failed to pull the goat, continuing anyway..."

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[ChiefHolland]

LGTM