Project setup

[penguineer]

This pull request introduces several significant changes, including the addition of GitHub Actions workflows, Docker configurations, and a new application structure using Tornado. The most important changes are grouped by their themes: CI/CD workflows, Docker setup, application code, and documentation.

CI/CD Workflows

• Added a GitHub Actions workflow for building and pushing Docker images on push and pull request events. (.github/workflows/docker-image.yml)
• Added a GitHub Actions workflow for running PyTest on push and pull request events. (.github/workflows/pytest.yml)
• Added a GitHub Actions workflow for creating releases on tag pushes. (.github/workflows/release.yml)

Docker Setup

• Created a Dockerfile to build the application using a multi-stage build, including setting up health checks and exposing port 8080. (Dockerfile)
• Added a docker-compose.yml file for development use, with instructions to create an .env file for configuration. (docker-compose.yml)

Application Code

• Implemented a new Tornado-based application with health check and OpenAPI specification endpoints. (src/app.py)
• Added a dummy unit test to set up the testing framework. (test/test_dummy.py)

Documentation

• Updated the README.md with usage instructions, including how to run the application with Docker and Docker Compose. (README.md)
• Added a .env.template file for environment variable configuration. (.env.template)

These changes collectively enhance the project's CI/CD pipeline, Docker support, application structure, and documentation.