feat: add render.com blueprint validator #176

	---
	# Run this locally with act - https://github.com/nektos/act
	# act -j lintYaml
	name: Lint YAML

	on: # yamllint disable-line rule:truthy
	push:
	branches: [master, main]
	paths:
	- '**.yml'
	- '**.yaml'
	- '.github/workflows/**.yml'
	- '.github/workflows/**.yaml'
	pull_request:
	branches: [master, main]
	paths:
	- '**.yml'
	- '**.yaml'
	- '.github/workflows/**.yml'
	- '.github/workflows/**.yaml'

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	lintYaml:
	runs-on: ubuntu-latest
	timeout-minutes: 15

	steps:
	- name: Checkout repository
	uses: actions/checkout@v4
	- name: Check YAML files with linter
	uses: ibiqlik/action-yamllint@v3
	with:
	# All files under base dir
	file_or_dir: "."
	config_data: \|
	extends: default
	yaml-files:
	- '*.yaml'
	- '*.yml'
	rules:
	document-start:
	level: warning
	line-length:
	level: warning
	new-line-at-end-of-file:
	level: warning
	trailing-spaces:
	level: warning
	- name: Lint GitHub Actions
	uses: reviewdog/action-actionlint@v1
	- name: Check GitHub Actions with 'actionlint'
	# Ref: https://github.com/rhysd/actionlint/blob/main/docs/usage.md#use-actionlint-on-github-actions
	# shellcheck is too noisy and disabled
	run: \|
	bash <(curl https://raw.githubusercontent.com/rhysd/actionlint/main/scripts/download-actionlint.bash)
	./actionlint -color -shellcheck=
	shell: bash

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