fix: ensure that email addresses are never unset

settings_docker.py

@@ -20,12 +20,12 @@
 COMPRESS_OFFLINE = COMPRESS_OFFLINE and COMPRESS_OFFLINE.lower() == "true"
 COMPRESS_ENABLED = os.getenv("COMPRESS_ENABLED")
 COMPRESS_ENABLED = COMPRESS_ENABLED and COMPRESS_ENABLED.lower() == "true"
-EMAIL_BACKEND = os.getenv("EMAIL_BACKEND") or EMAIL_BACKEND
-EMAIL_USE_TLS = os.getenv("EMAIL_USE_TLS") or EMAIL_USE_TLS
-EMAIL_HOST = os.getenv("EMAIL_HOST") or EMAIL_HOST
-EMAIL_HOST_USER = os.getenv("EMAIL_HOST_USER") or EMAIL_HOST_USER
-EMAIL_HOST_PASSWORD = os.getenv("EMAIL_HOST_PASSWORD") or EMAIL_HOST_PASSWORD
-EMAIL_PORT = os.getenv("EMAIL_PORT") or EMAIL_PORT
+EMAIL_BACKEND = os.getenv("EMAIL_BACKEND")
+EMAIL_USE_TLS = os.getenv("EMAIL_USE_TLS")
+EMAIL_HOST = os.getenv("EMAIL_HOST")
+EMAIL_HOST_USER = os.getenv("EMAIL_HOST_USER")
+EMAIL_HOST_PASSWORD = os.getenv("EMAIL_HOST_PASSWORD")
+EMAIL_PORT = os.getenv("EMAIL_PORT")
 
 # Cover both forms, the first being deprecated
 ARCHES_NAMESPACE_FOR_DATA_EXPORT = os.getenv("ARCHES_NAMESPACE_FOR_DATA_EXPORT", "http://arches:8000/")