fix: add ssh script to run springboot app & add comments

.github/workflows/springboot-on-push.yaml

@@ -25,13 +25,15 @@ jobs:
         distribution: 'temurin'
         cache: gradle
 
+    # Build & Test
     - name: Grant execute permission for gradlew
       run: chmod +x gradlew
     - name: Build with Gradle
       run: ./gradlew clean build
     - name: Test with Gradle
       run: ./gradlew test
 
+    # Deploy
     - name: Set up SSH
       uses: webfactory/[email protected]
       with:
@@ -43,6 +45,10 @@ jobs:
       working-directory: ./springboot/build/libs
     - name: Execute remote commands
       run: |
-        ssh ${{ secrets.SPRINGBOOT_USERNAME }}@${{ secrets.SPRINGBOOT_HOST_DNS }}\
-        "fuser -k 8080/tcp"
-        ssh ${{ secrets.SPRINGBOOT_USERNAME }}@${{ secrets.SPRINGBOOT_HOST_DNS }}\
+        ssh -v ${{ secrets.SPRINGBOOT_USERNAME }}@${{ secrets.SPRINGBOOT_HOST_DNS }}\
+        "cd ${{ secrets.SPRINGBOOT_TARGET_DIR }}"
+        ssh -v ${{ secrets.SPRINGBOOT_USERNAME }}@${{ secrets.SPRINGBOOT_HOST_DNS }}\
+        "fuser -k 8080/tcp || true"
+        ssh -v ${{ secrets.SPRINGBOOT_USERNAME }}@${{ secrets.SPRINGBOOT_HOST_DNS }}\
+        "sudo nohup /usr/bin/java -jar ${{ secrets.SPRINGBOOT_TARGET_DIR }}/build/libs/*.jar\
+         > {{ secrets.SPRINGBOOT_TARGET_DIR }}/app.log 2>&1 &"