feat: allow to set http port (#931)

deploy/dynamo/sdk/src/dynamo/sdk/cli/serve_dynamo.py

@@ -313,14 +313,16 @@ def main(
 
                 if added_routes:
                     # Configure uvicorn with graceful shutdown
+                    # get the port from PORT env var or use 8000 as default
+                    port = int(os.environ.get("PORT", 8000))
                     config = uvicorn.Config(
-                        service.app, host="0.0.0.0", port=8000, log_level="info"
+                        service.app, host="0.0.0.0", port=port, log_level="info"
                     )
                     server = uvicorn.Server(config)
 
                     # Start the server with graceful shutdown handling
                     logger.info(
-                        f"Starting FastAPI server on 0.0.0.0:8000 with routes: {added_routes}"
+                        f"Starting FastAPI server on 0.0.0.0:{port} with routes: {added_routes}"
                     )
                     server.run()
                 else: