External DB init changes

backend/entrypoint.sh

@@ -2,7 +2,7 @@
 # Docker entrypoint script for PPR API
 # Handles database migrations and data seeding automatically
 
-set -e
+# Note: We don't use 'set -e' here because we need to handle specific exit codes from Python scripts
 
 echo "========================================="
 echo "PPR API Container Starting"
@@ -139,6 +139,30 @@ elif [ $DB_STATE -eq 0 ]; then
     else
         echo "✓ Database is up to date"
     fi
+    
+    # Check if reference data needs to be loaded
+    python3 << EOF
+from sqlalchemy import create_engine, text
+from app.core.config import settings
+
+engine = create_engine(settings.database_url)
+with engine.connect() as conn:
+    airport_count = conn.execute(text("SELECT COUNT(*) FROM airports")).fetchone()[0]
+    aircraft_count = conn.execute(text("SELECT COUNT(*) FROM aircraft")).fetchone()[0]
+    
+    if airport_count == 0 or aircraft_count == 0:
+        print("Reference data missing - will load")
+        exit(10)
+    else:
+        print(f"Reference data exists (airports: {airport_count}, aircraft: {aircraft_count})")
+        exit(0)
+EOF
+    
+    if [ $? -eq 10 ]; then
+        echo "Loading reference data..."
+        python3 /app/seed_data.py
+        echo "✓ Reference data loaded"
+    fi
 else
     echo "✗ Database check failed"
     exit 1