fix build fail

Author: nguyenvanhadncntt

backend/Dockerfile

@@ -1,5 +1,5 @@
 # Base image with Java 21
-FROM openjdk:21-jdk-slim
+FROM eclipse-temurin:21-jdk-jammy
 
 # Install necessary tools: curl, unzip
 RUN apt-get update && apt-get install -y curl unzip && rm -rf /var/lib/apt/lists/*

backend/app/exception/AppException.scala

@@ -6,4 +6,4 @@ import play.api.http.Status
  * Base application exception with an associated HTTP status code.
  * Specific exceptions extend this so handlers can map them to proper HTTP responses.
  */
-sealed abstract class AppException(message: String, val statusCode: Int = Status.BAD_REQUEST) extends RuntimeException(message)
+case class AppException(message: String, val statusCode: Int = Status.BAD_REQUEST) extends RuntimeException(message)

backend/app/services/WorkspaceService.scala

@@ -14,6 +14,7 @@ import slick.jdbc.JdbcProfile
 import java.time.Instant
 import javax.inject.{Inject, Singleton}
 import scala.concurrent.{ExecutionContext, Future}
+import exception.AppException
 
 @Singleton
 class WorkspaceService @Inject()(

backend/conf/application.conf

@@ -36,7 +36,7 @@ slick.dbs.default.db.url = "jdbc:postgresql://localhost:5432/smart_taskhub"
 slick.dbs.default.db.url = ${?DB_URL}
 slick.dbs.default.db.user = "postgres"
 slick.dbs.default.db.user = ${?DB_USER}
-slick.dbs.default.db.password = "postgres"
+slick.dbs.default.db.password = "admin"
 slick.dbs.default.db.password = ${?DB_PASSWORD}
 
 # Play evolutions