First complete version

obijupyterhub/start-notebook.sh

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+#!/bin/bash
+set -e
+
+# Function to create directory
+create_r_packages_dir() {
+    local max_attempts=10
+    local attempt=1
+    
+    while [ $attempt -le $max_attempts ]; do
+        if [ -d "/home/jovyan/work" ]; then
+            mkdir -p /home/jovyan/work/R_packages
+            echo "R_packages directory created successfully"
+            return 0
+        fi
+        echo "Waiting for work directory to be mounted (attempt $attempt/$max_attempts)..."
+        sleep 1
+        attempt=$((attempt + 1))
+    done
+    
+    echo "Warning: Could not verify work directory mount"
+    return 1
+}
+
+# Create R_packages directory
+create_r_packages_dir
+
+# Start the single-user server
+exec jupyterhub-singleuser "$@"