Updated action, added permission

Author: wlanboy

.github/workflows/dockerpublish.yml

@@ -4,17 +4,20 @@ on:
     tags: 
       - '*d'
   workflow_dispatch:
+
+permissions:
+  contents: read
+
 jobs:
   build:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v6
-    - name: Publish to Registry
-      env:
-        DOCKER_USER: ${{secrets.DOCKER_USERNAME}}
-        DOCKER_PASSWORD: ${{secrets.DOCKER_PASSWORD}}
-      run: |
-        docker login -u $DOCKER_USER -p $DOCKER_PASSWORD 
+    - name: Log in to Docker Hub
+      uses: docker/login-action@v4
+      with:
+        username: ${{ secrets.DOCKER_USERNAME }}
+        password: ${{ secrets.DOCKER_PASSWORD }}
     - name: Build the Docker image
       run: docker build -t wlanboy/javahttpclient:latest . 
     - name: Docker Push