Deepstream-app not running correctly using deepstream:6.0-triton docker on T4: can't open path for engine

Please provide complete information as applicable to your setup.

• Hardware Platform (Jetson / GPU)
T4 GPU
• DeepStream Version
docker pull nvcr.io/nvidia/deepstream:6.0-triton (http://nvcr.io/nvidia/deepstream:6.0-triton)
• JetPack Version (valid for Jetson only)
• TensorRT Version
8.0.1
• NVIDIA GPU Driver Version (valid for GPU only)
470.82.01
• Issue Type( questions, new requirements, bugs)
questions
• How to reproduce the issue ? (This is for bugs. Including which sample app is using, the configuration files content, the command line used and other details for reproducing)

  1. using a pulled docker from nvcr.io/nvidia/deepstream:6.0-triton,
  2. disabling sink 0 (eglsink) by setting enable=0 in deepstream_app_source1_dashcamnet_vehiclemakenet_vehicletypenet.txt
  3. running the application with
    deepstream-app -c deepstream_app_source1_dashcamnet_vehiclemakenet_vehicletypenet.txt
Warning: 'input-dims' parameter has been deprecated. Use 'infer-dims' instead.
Warning: 'input-dims' parameter has been deprecated. Use 'infer-dims' instead.
Warning: 'input-dims' parameter has been deprecated. Use 'infer-dims' instead.
ERROR: ../nvdsinfer/nvdsinfer_model_builder.cpp:1484 Deserialize engine failed because file path: /opt/nvidia/deepstream/deepstream-6.0/samples/configs/tao_pretrained_models/../../models/tao_pretrained_models/vehicletypenet/resnet18_vehicletypenet_pruned.etlt_b4_gpu0_int8.engine open error