feat: updated dockerfile, deps, guide & fix src

- fix logical error, better non 200 resp message in main.py
- updated dependencies
- major updates to contributing guide
- quicker prod builds with reduced docker layers
- adds dockerfile for development
- updates github action for unit-tests

pyproject.toml

@@ -9,11 +9,11 @@ license = "MIT"
 python = "^3.10"
 requests = "^2.28.1"
 PyGithub = "^1.55"
-Faker = "^13.15.1"
+Faker = "^13.16.0"
 
 [tool.poetry.dev-dependencies]
 autopep8 = "^1.6.0"
-pylint = "^2.14.5"
+pylint = "^2.15.3"
 python-dotenv = "^0.20.0"
 loguru = "^0.6.0"
 bandit = "^1.7.4"