Updates application port to 3004

WHAT: Updates the application's default port from 8080 to 3004 across various Docker configurations and scripts. This includes changes to Dockerfiles, docker-compose files, and startup scripts. Also updates the vite config.
WHY: Standardizes the port used by the application to 3004 for consistency and to avoid potential conflicts with other services that might be using port 8080.
HOW: Modifies the `EXPOSE` directives in the Dockerfiles, the port mappings in the docker-compose files, the default port in the main application server file, the port in the vite config and the scripts that display the API URL.

vite.config.ts

@@ -11,13 +11,14 @@ export default defineConfig({
     },
   },
   server: {
+    port: 3003,
     proxy: {
       '/api': {
-        target: 'http://localhost:8080',
+        target: 'http://localhost:3004',
         changeOrigin: true,
       },
       '/health': {
-        target: 'http://localhost:8080',
+        target: 'http://localhost:3004',
         changeOrigin: true,
       }
     }