Modified dockerfiles, added data documentation & refactored code for clarity

[dmccoystephenson]

Problem

Dan has requested some changes on usdot-jpo-ode#42.

Solution

The changes in this pull request address the following:

• Unnecessary instruction in dockerfiles
• Lack of documentation for data included in the project
• Lack of clarity for kafkaType check
• Lack of clarity for logger setup methods

Testing

• The program was able to be built & spun up using docker-compose locally.
• The unit tests pass with these changes.

[drewjj]

This looks good

[mwodahl]

Looks good to me as well!