diff --git a/Jenkinsfile b/Jenkinsfile
index df3240f..9bc6f3b 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -31,7 +31,14 @@ pipeline {
 
   stages {
     stage('Checkout') {
-      steps { checkout scm }
+      steps {
+        checkout scm
+        // Pre-create the host-side uv cache dir as the Jenkins user *before* the
+        // 'Test' stage's docker agent bind-mounts it. If this dir doesn't exist
+        // yet, Docker auto-creates it as root when the container starts, which
+        // then blocks writes from the non-root user the container runs as.
+        sh 'mkdir -p "$HOME/.cache/uv"'
+      }
     }
 
     // Root, cloud-api, and host-agent suites, excluding tests that need real