Fix group regex
@@ -9,7 +9,7 @@ from ..const import (
ARCH_AARCH64, ARCH_AMD64, ARCH_I386)
-MAP_VOLUME = r"^(config|ssl|addons|backup)(:rw|:ro)?$"
+MAP_VOLUME = r"^(config|ssl|addons|backup)(?::(rw|:ro))?$"
V_STR = 'str'
V_INT = 'int'
