some changes to ensure Python unittests are executed #16

	name: Docker Build and Test

	on: [push, pull_request]

	jobs:
	build_and_test:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v2

	- name: Set up Docker Environment
	uses: docker/setup-buildx-action@v1

	- name: Build Docker image
	run: docker build . -t meloian/modern_prog:latest

	- name: Log in to Docker Registry
	uses: docker/login-action@v1
	with:
	username: ${{ secrets.DOCKER_USERNAME }}
	password: ${{ secrets.DOCKER_PASSWORD }}

	- name: Push to Docker Registry
	run: docker push meloian/modern_prog:latest

	- name: Pull and Run Docker container
	run: docker run --rm meloian/modern_prog:latest

	- name: Execute Tests
	run: docker run --rm meloian/modern_prog:latest python3 -m unittest discover -s /app -p 'test_*.py'

	- name: List files in /app directory
	run: docker run --rm meloian/modern_prog:latest ls -R /app

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