Address pre-commit issues.

docker-compose.yml

@@ -21,7 +21,8 @@ services:
     depends_on:
       - rabbitmq
     environment:
-      BROKER_URL: &broker_url amqp://waldorf:pass@rabbitmq/waldorf
+      # yamllint disable-line rule:line-length
+      BROKER_URL: &broker_url amqp://waldorf:pass@rabbitmq/waldorf  # pragma: allowlist secret
       FLASK_APP: server
       FLASK_ENV: development
     healthcheck:

server.py

 """Dummy web server using Flask."""
-from flask import Flask, request, jsonify
+from flask import Flask, request, jsonify  # pylint: disable=import-error
 import tasks
 
 app = Flask(__name__)  # pylint: disable=invalid-name

tasks.py

 """Celery worker."""
 import logging
 import os
-from celery import Celery
+from celery import Celery  # pylint: disable=import-error
 
 
 BROKER_URL = os.getenv("BROKER_URL")
@@ -11,4 +11,4 @@ app = Celery("tasks", broker=BROKER_URL)  # pylint: disable=invalid-name
 @app.task
 def log(message):
     """Log message."""
-    logging.info(f"Message: %s", message)
+    logging.info("Message: %s", message)