[SEBA-497] Release tag an alpine-based image

Change-Id: I14c3a98b1c661765877220e143b32a4a5f1c79b9
diff --git a/VERSION b/VERSION
index 84e6d84..c043eea 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.2.1-dev
+2.2.1