diff --git a/Dockerfile b/Dockerfile
index ac0d8ee..3767421 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -23,9 +23,10 @@ COPY . /app/
 # Exponer el puerto
 EXPOSE 8000
 
-# Crear un usuario no-root por seguridad
-RUN adduser --disabled-password --no-create-home djangouser
+# Crear un usuario no-root por seguridad (con home directory para Gunicorn)
+RUN adduser --disabled-password djangouser
 RUN chown -R djangouser:djangouser /app
+RUN mkdir -p /app/media /app/static && chown -R djangouser:djangouser /app/media /app/static
 USER djangouser
 
 # Comando por defecto para iniciar Gunicorn con Uvicorn workers (Producción)
diff --git a/procurement/forms.py b/procurement/forms.py
index 20120d2..81ce149 100644
--- a/procurement/forms.py
+++ b/procurement/forms.py
@@ -108,8 +108,8 @@ class ThreeWayMatchForm(forms.ModelForm):
         widgets = {
             'purchase_order': forms.Select(attrs={'class': 'form-control', 'id': 'id_po_select', 'required': 'required'}),
             'goods_receipt': forms.Select(attrs={'class': 'form-control', 'required': 'required'}),
-            'dte_invoice_number': forms.TextInput(attrs={'class': 'form-control', 'placeholder': 'Ej: 45290', 'required': 'required', 'pattern': '^[0-9A-Za-z\-]+$'}),
-            'dte_invoice_rut': forms.TextInput(attrs={'class': 'form-control', 'placeholder': 'Ej: 76.543.210-K', 'required': 'required', 'pattern': '^\d{1,2}\.\d{3}\.\d{3}-[\dkK]$'}),
+            'dte_invoice_number': forms.TextInput(attrs={'class': 'form-control', 'placeholder': 'Ej: 45290', 'required': 'required', 'pattern': r'^[0-9A-Za-z\-]+$'}),
+            'dte_invoice_rut': forms.TextInput(attrs={'class': 'form-control', 'placeholder': 'Ej: 76.543.210-K', 'required': 'required', 'pattern': r'^\d{1,2}\.\d{3}\.\d{3}-[\dkK]$'}),
             'dte_net_amount': forms.NumberInput(attrs={'class': 'form-control', 'step': '1', 'id': 'id_dte_net', 'required': 'required', 'min': '0'}),
             'dte_tax_amount': forms.NumberInput(attrs={'class': 'form-control', 'step': '1', 'id': 'id_dte_tax', 'required': 'required', 'min': '0'}),
             'dte_total_amount': forms.NumberInput(attrs={'class': 'form-control', 'step': '1', 'id': 'id_dte_total', 'required': 'required', 'min': '0'}),