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Mattermost, Open WebUI, RustDesk, Vikunja, NetBox, SearXNG and 6 more: small fixes #12

	name: Validate Compose files
	on:
	workflow_dispatch:
	push:
	branches:
	- main
	paths:
	- 'services/**'
	- '.github/workflows/compose-validation.yml'
	pull_request:
	branches:
	- main
	paths:
	- 'services/**'
	- '.github/workflows/compose-validation.yml'

	permissions:
	contents: read

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: ${{ github.event_name == 'pull_request' }}

	jobs:
	validate:
	runs-on: ubuntu-latest
	timeout-minutes: 15
	steps:
	- name: Clone this repo
	uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1

	# Some stacks require the user to set their own secrets and stop with
	# "required variable X is missing". Supply a dummy value for those and
	# retry, so that the rest of the file is still checked.
	- name: Run docker compose config
	run: \|
	status=0
	for dir in services/*/; do
	vars=()
	ok=0
	for attempt in $(seq 1 30); do
	if out=$(cd "$dir" && env "${vars[@]/%/=dummy}" docker compose config --quiet 2>&1); then
	ok=1
	break
	fi
	missing=$(grep -oE 'required variable [A-Za-z0-9_]+' <<<"$out" \| awk '{print $3}' \| sort -u \| grep -vxFf <(printf '%s\n' "${vars[@]}") \|\| true)
	if [ -z "$missing" ]; then
	echo "::error file=${dir}compose.yaml::docker compose config failed in ${dir}"
	echo "$out"
	status=1
	ok=2
	break
	fi
	vars+=($missing)
	done
	if [ "$ok" = 0 ]; then
	echo "::error file=${dir}compose.yaml::too many required variables in ${dir}"
	status=1
	fi
	done
	exit $status