Updates the metadata to MDS 3 #877

	---
	name: Check that binaries are reproducible
	on:
	push:
	pull_request:
	types: [opened, synchronize, reopened]

	jobs:
	check_hashes:
	strategy:
	matrix:
	os: [ubuntu-latest, macos-10.15]
	fail-fast: false
	runs-on: ${{ matrix.os }}
	steps:
	- uses: actions/checkout@v2
	with:
	submodules: "true"
	- uses: actions-rs/toolchain@v1
	with:
	target: thumbv7em-none-eabi
	- uses: actions/setup-python@v1
	with:
	python-version: 3.7
	- name: Install Python dependencies
	run: python -m pip install --upgrade pip setuptools wheel
	- name: Set up OpenSK
	run: ./setup.sh

	- name: Use sample cryptographic material
	run: rm -R crypto_data/ && cp -r reproducible/sample_crypto_data crypto_data
	- name: Computing cryptographic hashes
	run: ./reproduce_hashes.sh

	- name: Upload reproduced binaries
	uses: actions/upload-artifact@v1
	with:
	name: reproduced-${{ matrix.os }}
	path: reproducible/reproduced.tar

	- name: Comparing binary sizes
	if: always()
	run: git diff --no-index reproducible/reference_elf2tab_${{ matrix.os }}.txt reproducible/elf2tab.txt \|\| true
	- name: Comparing cryptographic hashes
	if: always()
	run: git diff --no-index reproducible/reference_binaries_${{ matrix.os }}.sha256sum reproducible/binaries.sha256sum \|\| true

Provide feedback