diff --git a/fedora-ostree-workstation.json b/fedora-ostree-workstation.json
index 98b2830..ac0f502 100644
--- a/fedora-ostree-workstation.json
+++ b/fedora-ostree-workstation.json
@@ -18,6 +18,8 @@
     "check-passwd": { "type": "file", "filename": "passwd" },
     "check-groups": { "type": "file", "filename": "group" },
 
+    "postprocess-script": "post.sh",
+
     "packages": [
 		"aajohan-comfortaa-fonts",
 		"abrt",
diff --git a/post.sh b/post.sh
new file mode 100755
index 0000000..0827765
--- /dev/null
+++ b/post.sh
@@ -0,0 +1,3 @@
+#!/bin/bash
+
+set -xeuo pipefail