Describe the bug
Docker Compose fails to start service and constantly restarts

To Reproduce
Steps to reproduce the behavior:

1. create docker-compose.yml in project
2. run docker-compose up

Expected behavior
The service starts successfully and accepts connections

docker-compose.yml

version: '3.1'

services:
  local-data-api:
    image: koxudaxi/local-data-api
    restart: always
    environment:
      ENGINE: PostgresSQLJDBC
      POSTGRES_HOST: db
      POSTGRES_PORT: 5432
      POSTGRES_USER: postgres
      POSTGRES_PASSWORD: secret
      RESOURCE_ARN: 'arn:aws:rds:us-east-1:123456789012:cluster:dummy'
      SECRET_ARN: 'arn:aws:secretsmanager:us-east-1:123456789012:secret:dummy'
    ports:
      - '8080:80'
  db:
    image: mdillon/postgis
    restart: always
    environment:
      POSTGRES_PASSWORD: secret
      POSTGRES_DB: dev
    ports:
      - '5432:5432'

Error Messages

local-data-api_1  | [2020-11-08 11:06:34 +0000] [1] [INFO] Starting gunicorn 20.0.4
local-data-api_1  | [2020-11-08 11:06:34 +0000] [1] [INFO] Listening at: http://0.0.0.0:80 (1)
local-data-api_1  | [2020-11-08 11:06:34 +0000] [1] [INFO] Using worker: uvicorn.workers.UvicornWorker
local-data-api_1  | [2020-11-08 11:06:34 +0000] [7] [INFO] Booting worker with pid: 7
local-data-api_1  | [2020-11-08 11:06:34 +0000] [7] [ERROR] Exception in worker process
local-data-api_1  | Traceback (most recent call last):
local-data-api_1  |   File "/usr/local/lib/python3.8/site-packages/gunicorn/arbiter.py", line 583, in spawn_worker
local-data-api_1  |     worker.init_process()
local-data-api_1  |   File "/usr/local/lib/python3.8/site-packages/uvicorn/workers.py", line 57, in init_process
local-data-api_1  |     super(UvicornWorker, self).init_process()
local-data-api_1  |   File "/usr/local/lib/python3.8/site-packages/gunicorn/workers/base.py", line 119, in init_process
local-data-api_1  |     self.load_wsgi()
local-data-api_1  |   File "/usr/local/lib/python3.8/site-packages/gunicorn/workers/base.py", line 144, in load_wsgi
local-data-api_1  |     self.wsgi = self.app.wsgi()
local-data-api_1  |   File "/usr/local/lib/python3.8/site-packages/gunicorn/app/base.py", line 67, in wsgi
local-data-api_1  |     self.callable = self.load()
local-data-api_1  |   File "/usr/local/lib/python3.8/site-packages/gunicorn/app/wsgiapp.py", line 49, in load
local-data-api_1  |     return self.load_wsgiapp()
local-data-api_1  |   File "/usr/local/lib/python3.8/site-packages/gunicorn/app/wsgiapp.py", line 39, in load_wsgiapp
local-data-api_1  |     return util.import_app(self.app_uri)
local-data-api_1  |   File "/usr/local/lib/python3.8/site-packages/gunicorn/util.py", line 358, in import_app
local-data-api_1  |     mod = importlib.import_module(module)
local-data-api_1  |   File "/usr/local/lib/python3.8/importlib/__init__.py", line 127, in import_module
local-data-api_1  |     return _bootstrap._gcd_import(name[level:], package, level)
local-data-api_1  |   File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
local-data-api_1  |   File "<frozen importlib._bootstrap>", line 991, in _find_and_load
local-data-api_1  |   File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
local-data-api_1  |   File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
local-data-api_1  |   File "<frozen importlib._bootstrap_external>", line 783, in exec_module
local-data-api_1  |   File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
local-data-api_1  |   File "/app/local_data_api/main.py", line 28, in <module>
local-data-api_1  |     setup()
local-data-api_1  |   File "/app/local_data_api/settings.py", line 58, in setup
local-data-api_1  |     raise NotImplementedError("Engine not already implemented")
local-data-api_1  | NotImplementedError: Engine not already implemented
local-data-api_1  | [2020-11-08 11:06:34 +0000] [7] [INFO] Worker exiting (pid: 7)
local-data-api_1  | {"loglevel": "info", "workers": 1, "bind": "0.0.0.0:80", "graceful_timeout": 120, "timeout": 120, "keepalive": 5, "errorlog": "-", "accesslog": "-", "workers_per_core": 1.0, "use_max_workers": null, "host": "0.0.0.0", "port": "80"}
local-data-api_1  | [2020-11-08 11:06:34 +0000] [1] [INFO] Shutting down: Master
local-data-api_1  | [2020-11-08 11:06:34 +0000] [1] [INFO] Reason: Worker failed to boot.
local-data-api_1  | {"loglevel": "info", "workers": 1, "bind": "0.0.0.0:80", "graceful_timeout": 120, "timeout": 120, "keepalive": 5, "errorlog": "-", "accesslog": "-", "workers_per_core": 1.0, "use_max_workers": null, "host": "0.0.0.0", "port": "80"}
api_local-data-api_1 exited with code 3

Desktop (please complete the following information):

• OS: [e.g. iOS] Ubuntu 20.04
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Additional context
Add any other context about the problem here.