Add S3StorageMixin to DockerComposeProductionConfiguration (#616)

* Add S3StorageMixin to DockerComposeProductionConfiguration

* Use env var names in comment

Co-authored-by: Zach Mullen <zach.mullen@kitware.com>

Co-authored-by: Zach Mullen <zach.mullen@kitware.com>

Author: annehaley

miqa/settings.py

@@ -12,6 +12,7 @@
     ProductionBaseConfiguration,
     SmtpEmailMixin,
     TestingBaseConfiguration,
+    S3StorageMixin,
 )
 from composed_configuration._configuration import _BaseConfiguration
 from configurations import values
@@ -107,12 +108,19 @@ class DockerComposeProductionConfiguration(
     MiqaMixin,
     SmtpEmailMixin,
     HttpsMixin,
+    S3StorageMixin,
     _BaseConfiguration,
 ):
     """For the production deployment using docker-compose."""
 
     MIQA_URL_PREFIX = values.Value(environ=True, default='/')
 
+    # Configure connection to S3 bucket by setting the following environment variables:
+    # AWS_DEFAULT_REGION
+    # AWS_ACCESS_KEY_ID
+    # AWS_SECRET_ACCESS_KEY
+    # DJANGO_STORAGE_BUCKET_NAME
+
     # Needed to support the reverse proxy configuration
     USE_X_FORWARDED_HOST = True