Improve docker-compose build and run

On branch master

Changes to be committed:
	modified:   README.md
	new file:   api/.dockerignore
	new file:   api/.env
	new file:   api/.env_docker
	modified:   api/.gitignore
	modified:   api/Dockerfile
	modified:   api/app/queries.js
	new file:   api/package-lock.json
	modified:   api/package.json
	modified:   api/server.js
	modified:   docker-compose.yml
	modified:   mongodb/Dockerfile