Update server/main.py #251

	name: Artifact Cache Clean-up

	on:
	pull_request:
	push:

	jobs:
	Clean:
	runs-on: ubuntu-latest
	steps:
	- name: Check out code
	uses: actions/checkout@v3

	- name: Cleanup Artifact Cache
	run: \|
	gh extension install actions/gh-actions-cache

	REPO=${{ github.repository }}
	BRANCH="refs/pull/${{ github.event.pull_request.number }}/merge"

	echo "Fetching list of cache keys"
	cacheKeysForPR=$(gh actions-cache list -R $REPO -B $BRANCH \| awk -F '\t' -v pattern="opera-build" '$0 ~ pattern {print $1}')

	## Setting this to not fail the workflow while deleting cache keys.
	set +e
	echo "Deleting caches..."
	for cacheKey in $cacheKeysForPR
	do
	gh actions-cache delete $cacheKey -R $REPO -B $BRANCH --confirm
	done
	echo "Done"

	env:
	GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

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