feature: Set min length for password

backend/src/modules/authentication/dto/sign-in.dto.ts

@@ -1,9 +1,10 @@
-import { IsString } from 'class-validator';
+import { IsString, MinLength } from 'class-validator';
 
 export class SignInDto {
   @IsString()
   username: string;
 
   @IsString()
+  @MinLength(8)
   password: string;
 }

backend/src/modules/authentication/dto/sign-up.dto.ts

@@ -1,10 +1,17 @@
-import { IsString, IsEmail, IsMobilePhone, IsOptional, IsNumber, IsDate, isBoolean } from "class-validator";
+import { 
+    IsString, 
+    IsEmail, 
+    IsMobilePhone, 
+    IsOptional, 
+    IsNumber, 
+    MinLength
+} from "class-validator";
 
 export class SignUpDto{
     @IsString()
     full_name: string;
 
-    @IsString()
+    @IsMobilePhone('vi-VN')
     phone_number: string;
 
     @IsOptional()
@@ -12,5 +19,6 @@ export class SignUpDto{
     email?: string;
 
     @IsString()
+    @MinLength(8)
     password: string;
 }