Add retries for db connecton for prepare db #45

	name: Test metrics
	on: [push, pull_request]

	jobs:
	test_proxy:
	defaults:
	run:
	working-directory: metrics
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: [3.12]
	env:
	ETH_ENDPOINT: ${{ secrets.ETH_ENDPOINT }}
	PYTHONPATH: ${{ github.workspace }}/metrics
	MYSQL_USER: test
	MYSQL_PASSWORD: test
	MYSQL_ROOT_PASSWORD: test
	MYSQL_HOST: 127.0.0.1
	MYSQL_DATABASE: metrics
	steps:
	- uses: actions/checkout@v4
	with:
	submodules: true
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python-version }}
	cache: 'pip'
	- name: Install python dependencies
	run: pip install -r requirements.txt && pip install -r requirements-dev.txt
	- name: Lint with ruff
	run: ruff check src/
	- name: Run MySQL container
	run: docker compose up -d db
	- name: Prepare database
	run: python tests/prepare_db.py
	- name: Run metrics tests
	run: pytest tests/

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