Added cache pip to CI workflows #16

	name: CI

	on:
	push:
	branches: ["*"]
	pull_request:
	branches: ["*"]

	jobs:
	build-and-test:
	runs-on: ubuntu-latest

	permissions:
	contents: read
	packages: write

	steps:
	# Get code
	- name: Checkout repository
	uses: actions/checkout@v4

	# Set up Python
	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: "3.11"

	# Cache pip dependencies
	- name: Cache pip
	uses: actions/cache@v4
	with:
	path: ~/.cache/pip
	key: ${{ runner.os }}-pip-${{ hashFiles('backend/requirements.txt') }}
	restore-keys: \|
	${{ runner.os }}-pip

	# Install dependencies
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -r backend/requirements.txt

	# Lint with Ruff
	- name: Lint with Ruff
	run: \|
	ruff check backend/app backend/tests

	# Ruff formating check
	- name: Ruff format check
	run: \|
	ruff format --check backend/app backend/tests

	# Run tests
	- name: Run tests
	run: \|
	pytest backend/tests/

	# Log in to Github Container Registry
	- name: Log in to GHCR
	if: github.ref == 'refs/heads/main'
	uses: docker/login-action@v3
	with:
	registry: ghcr.io
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	# Build and push Docker image (for main only)
	- name: Build and push Docker image
	if: github.ref == 'refs/heads/main'
	run: \|
	IMAGE_NAME=ghcr.io/${{ github.repository_owner }}/eventrelay
	IMAGE_TAG=${{ github.sha }}

	docker build \
	-f backend/Dockerfile \
	-t $IMAGE_NAME:latest \
	-t $IMAGE_NAME:$IMAGE_TAG \
	backend

	docker push $IMAGE_NAME:latest
	docker push $IMAGE_NAME:$IMAGE_TAG

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