fix: update Docker Compose configuration to run container as root initially and set up storage directory with proper permissions

Author: noobdevsam

compose.yml

@@ -18,12 +18,12 @@ services:
     # Application Service
     stego-app:
         # Use the image built by the Spring Boot Maven plugin
-        image: docker.io/noobdevsam/spring-project-steganography-tool:v1
+        image: noobdevsam/spring-project-steganography-tool:v1
         container_name: stego-app
         ports:
             - "8080:8080"
         mem_limit: 2g
-        user: "1000:1000"  # Run as non-root user
+        user: "0:0"  # Run as root user initially
         environment:
             # Connect to the MySQL container
             - DATABASE_URL=jdbc:mysql://db-mysql:3306/stego
@@ -35,6 +35,14 @@ services:
             - JAVA_TOOL_OPTIONS=-XX:MaxRAMPercentage=75.0
         volumes:
             - stego_storage:/app/storage
+        command: >
+            sh -c "
+            mkdir -p /app/storage &&
+            chown -R 1000:1000 /app/storage &&
+            chmod -R 755 /app/storage &&
+            cd /workspace &&
+            exec setpriv --reuid=1000 --regid=1000 --clear-groups java org.springframework.boot.loader.launch.JarLauncher
+            "
         networks:
             - stego-network
         depends_on: