fix: docker build jar

Author: ricksu978

.github/workflows/build-and-deploy.yml

@@ -45,15 +45,15 @@ jobs:
         uses: actions/upload-artifact@v5
         with:
           name: jar-artifact
-          path: spring/target/${{ env.JAR_FILENAME }}
+          path: spring/target/${{ env.JAR_FILENAME }}.jar
 
       # Docker Build
       - name: Docker Build
         shell: pwsh
         run: docker build `
           -t ghcr.io/game-as-a-service/lobby-platform-service/api:${{ github.sha }} `
           -f docker/Dockerfile `
-          --build-arg JAR_FILE=spring/target/${{ env.JAR_FILENAME }} `
+          --build-arg JAR_FILE=spring/target/${{ env.JAR_FILENAME }}.jar `
           .
 
       # Login to GitHub Container Registry