🔊(backend) log request duration in Gunicorn workers

Include the time taken by each request in the Gunicorn worker
access logs, so we can spot slow endpoints and correlate latency
patterns directly from the logs.

docker/files/usr/local/etc/gunicorn/meet.py

@@ -14,3 +14,4 @@ accesslog = "-"
 # Using '-' for the error log file makes gunicorn log errors to stderr
 errorlog = "-"
 loglevel = "info"
+access_log_format = '%(h)s %(l)s %(u)s %(t)s "%(r)s" %(s)s %(b)s "%(f)s" "%(a)s" %(M)s'