diff --git a/.env.example b/.env.example
new file mode 100644
index 0000000..0550d5b
--- /dev/null
+++ b/.env.example
@@ -0,0 +1,15 @@
+# ========================================
+# Variables de Entorno (Plantilla)
+# ========================================
+DEBUG=True
+SECRET_KEY=django-insecure-r9n6j1_h%@uqoz0bjz^mq=t72o0t*j@84jpl%_i4^qu%&+**u7
+ALLOWED_HOSTS=*
+
+# === CONFIGURACIÓN LOCAL (Para usar start.sh sin Docker) ===
+# Deja estas variables vacías o comentadas para usar SQLite y Memory Channel.
+# DATABASE_URL=
+# REDIS_URL=
+
+# === CONFIGURACIÓN DOCKER (Descomentar para Producción/Docker) ===
+# DATABASE_URL=postgres://efintel_user:efintel_password@db:5432/efintel_db
+# REDIS_URL=redis://redis:6379/0
diff --git a/config/settings.py b/config/settings.py
index 2ea9eaa..0ba6333 100644
--- a/config/settings.py
+++ b/config/settings.py
@@ -160,8 +160,8 @@ MAILERS = {
 }
 
 # Celery Configuration
-CELERY_BROKER_URL = env('REDIS_URL', default='redis://localhost:6379/0')
-CELERY_RESULT_BACKEND = env('REDIS_URL', default='redis://localhost:6379/0')
+CELERY_BROKER_URL = env('REDIS_URL', default='memory://')
+CELERY_RESULT_BACKEND = env('REDIS_URL', default='cache+memory://')
 CELERY_ACCEPT_CONTENT = ['json']
 CELERY_TASK_SERIALIZER = 'json'
 CELERY_RESULT_SERIALIZER = 'json'
diff --git a/patch_settings.py b/patch_settings.py
new file mode 100644
index 0000000..070616c
--- /dev/null
+++ b/patch_settings.py
@@ -0,0 +1,42 @@
+import re
+
+with open('config/settings.py', 'r') as f:
+    content = f.read()
+
+# Replace CHANNEL_LAYERS
+old_channels = """CHANNEL_LAYERS = {
+    "default": {
+        "BACKEND": "channels_redis.core.RedisChannelLayer",
+        "CONFIG": {
+            "hosts": [env('REDIS_URL', default='redis://localhost:6379/0')],
+        },
+    },
+}"""
+new_channels = """REDIS_URL = env('REDIS_URL', default=None)
+if REDIS_URL:
+    CHANNEL_LAYERS = {
+        "default": {
+            "BACKEND": "channels_redis.core.RedisChannelLayer",
+            "CONFIG": {
+                "hosts": [REDIS_URL],
+            },
+        },
+    }
+else:
+    CHANNEL_LAYERS = {
+        "default": {
+            "BACKEND": "channels.layers.InMemoryChannelLayer"
+        }
+    }"""
+content = content.replace(old_channels, new_channels)
+
+# Replace Celery defaults so they don't crash if REDIS_URL is None
+old_celery1 = "CELERY_BROKER_URL = env('REDIS_URL', default='redis://localhost:6379/0')"
+new_celery1 = "CELERY_BROKER_URL = env('REDIS_URL', default='memory://')"
+old_celery2 = "CELERY_RESULT_BACKEND = env('REDIS_URL', default='redis://localhost:6379/0')"
+new_celery2 = "CELERY_RESULT_BACKEND = env('REDIS_URL', default='cache+memory://')"
+content = content.replace(old_celery1, new_celery1)
+content = content.replace(old_celery2, new_celery2)
+
+with open('config/settings.py', 'w') as f:
+    f.write(content)