diff --git a/.gitignore b/.gitignore
index d46a67a..632adba 100644
--- a/.gitignore
+++ b/.gitignore
@@ -132,3 +132,6 @@ test-data/WIGOS_0-454-2-AWSCHIKANGAWA_20221109T135500.bufr4
 # wis2-gdc
 local.env
 local.yml
+
+# architecture diagram backups
+*.bkp
diff --git a/docs/architecture/c4.container.png b/docs/architecture/c4.container.png
index bf04117..febcd4d 100644
Binary files a/docs/architecture/c4.container.png and b/docs/architecture/c4.container.png differ