From version 3.6+ mongodb by default binds only to localhost (127.0.0.1) IP. That can be checked with "netstat -tulpn | grep LISTEN" command in container. It will return "127.0.0.1:27017 | 0.0.0.0:* | LISTEN | 15/mongod" for mongod. That causes inability to connect to running mongo from host machine. Proposed change allows mongo to bind to container network interface, thus allowing connections from host machine.
* Problem: Source files contain no license info
Solution: Add comments with SPDX license info to source files
* Python 3 files don't need # -*- coding: utf-8 -*-
