diff --git a/Back/core/config.py b/Back/core/config.py
index 74f2097..a75c359 100755
--- a/Back/core/config.py
+++ b/Back/core/config.py
@@ -10,7 +10,7 @@ class Settings(BaseSettings):
     ACCESS_TOKEN_EXPIRE_DAYS: int = 1
     REFRESH_TOKEN_EXPIRE_WEEKS: int = 12
     ALGORITHM: str = "HS256"
-    SECRET_PASS_LENGTH: int
+    SECRET_PASS_LENGTH: int = 4
 
     DATABASE_URL: str
     REDIS_URL: str
diff --git a/Back/docker-compose.yml b/Back/docker-compose.yml
index fb92dd7..f32015f 100755
--- a/Back/docker-compose.yml
+++ b/Back/docker-compose.yml
@@ -76,7 +76,7 @@ services:
         condition: service_healthy
 
   api:
-    build: .
+    image: back-api
     container_name: neda_api
     ports:
       - "8000:8000"
diff --git a/Back/domains/admin/service.py b/Back/domains/admin/service.py
index 73e910d..a11f8fb 100644
--- a/Back/domains/admin/service.py
+++ b/Back/domains/admin/service.py
@@ -11,10 +11,10 @@ from domains.users.repo import (
 )
 
 from core.security import hash_password
-from core.config import Settings
+from core.config import settings
 
 def generate_user_secret():
-    return secrets.token_urlsafe(Settings.SECRET_PASS_LENGTH)
+    return secrets.token_urlsafe(settings.SECRET_PASS_LENGTH)
 
 async def admin_create_user(
     db: AsyncSession,
diff --git a/Back/livekit.yaml b/Back/livekit.yaml
index e2c1afd..a851c8d 100644
--- a/Back/livekit.yaml
+++ b/Back/livekit.yaml
@@ -17,7 +17,7 @@ turn:
   key_file: "/etc/letsencrypt/live/pathfinder.wikm.ir/privkey.pem"
   tls_port: 5349
   udp_port: 3478
-  external_tls: false 
+  external_tls: false
   domain: "pathfinder.wikm.ir"
 #######################################################
 
diff --git a/Back/scripts/create_admin.py b/Back/scripts/create_admin.py
index 9e231be..f8cd6e3 100644
--- a/Back/scripts/create_admin.py
+++ b/Back/scripts/create_admin.py
@@ -4,12 +4,12 @@ import secrets
 from db.session import AsyncSessionLocal
 from domains.users.models import User
 from core.security import hash_password
-from core.config import Settings
+from core.config import settings
 
 async def create_admin() -> None:
     username = input("Admin username: ").strip()
     phone_number = input("Phone number (optional, 11 digits): ").strip() or None
-    secret = secrets.token_urlsafe(Settings.SECRET_PASS_LENGTH)
+    secret = secrets.token_urlsafe(settings.SECRET_PASS_LENGTH)
     
     async with AsyncSessionLocal() as db:
         try: