diff --git a/.gitea/workflows/ci.yaml b/.gitea/workflows/ci.yaml
index b2ac80a..1e1fc33 100644
--- a/.gitea/workflows/ci.yaml
+++ b/.gitea/workflows/ci.yaml
@@ -11,19 +11,17 @@ on:
 jobs:
   build:
     runs-on: ubuntu-latest
+    container:
+      image: adoptopenjdk:17-jdk # 使用带有 JDK 17 的 Docker 镜像
 
     steps:
       - name: Checkout code
-        uses:  http://fly6516.synology.me:4000/Gitea_Action/checkout@v2
-
-      - name: Set up JDK 17
-        uses: http://fly6516.synology.me:4000/Gitea_Action/setup-java@v2
-        with:
-          java-version: '17'
-          distribution: 'temurin'
+        uses: http://fly6516.synology.me:4000/Gitea_Action/checkout@v2
 
       - name: Compile Java program
-        run: javac HelloWorld.java -d ./build/classes
+        run: |
+          mkdir -p ./build/classes
+          javac HelloWorld.java -d ./build/classes
 
       - name: List compiled files
         run: ls -la ./build/classes