minimal modifications to 'docker compos' setup and readme #17

	name: Build and Push Docker images

	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main

	permissions:
	contents: read
	packages: write

	jobs:
	build-and-push:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout code
	uses: actions/checkout@v4

	- name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v3

	- name: create .env
	run: echo "DB_USERNAME=postgres\nDB_PASSWORD=postgres\nDB_NAME=postgres\nDB_HOST=db" > .env

	- name: Login to GitHub Container Registry
	uses: docker/login-action@v3
	with:
	registry: ghcr.io
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Build and push Docker images
	run: \|
	docker-compose build
	docker-compose push

	- name: Cleanup
	if: always()
	run: docker logout

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