Add POSDAO post-merge specification #171

	name: Ethereum key check

	on:
	push:
	pull_request:
	schedule:
	- cron: '0 0 * * *' # Daily at 00:00 UTC

	jobs:
	check:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout Repository
	uses: actions/checkout@v2

	- name: Set up Python
	uses: actions/setup-python@v2
	with:
	python-version: '3.x'

	- name: Install PyYAML
	run: pip install PyYAML

	- name: Check keys
	# --dev checks against an unpinned commit. since new vars can be added at any time unpinned commits
	# are checked on a cron, not on regular flows.
	run: python scripts/assert_declare_ethereum_vars.py ${{ github.event_name == 'schedule' && '--dev' \|\| '' }}

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