diff --git a/tasks/secret-home/task.yaml b/tasks/secret-home/task.yaml
index 402417c..409b597 100644
--- a/tasks/secret-home/task.yaml
+++ b/tasks/secret-home/task.yaml
@@ -24,13 +24,13 @@ spec:
       image: alpine:3.21.3
       workingDir: /workspace/shared/$(params.subdirectory)
       script: |
-        #!/bin/sh
+        #!/usr/bin/env bash
         set -e
         apk add --no-cache coreutils
 
-        for key in $(params.keys); do
+        for key in $(params.keys[*]); do
           echo "encoding $key"
-          key_decoded=$(echo "$key" | sed 's/__/\//g')
+          key_decoded="${key//__//}"
           echo "decoding $key_decoded"
           target="/workspace/shared/$(params.subdirectory)/___HOME___/$key_decoded"
           mkdir -p "$(dirname "$target")"