Isaac SDK v4l2 example is not working in docker

Hi, everyone here. I’m testing isaask this time, and because of the ubuntu version, we’re using a docker. While conducting the tutorial, I was trying to test v4l2 camera, but I ran the docker through the following command.

Ubuntu 20.04
CUDA 11.4
GPU RTX3070

    docker run \
        --mount source=isaac-sdk-build-cache,target=/root \
        -v `pwd`:`pwd` \
        -w `pwd`/sdk \
        --network host \
        --device /dev/video2 \
        --rm \
        --name isaac-sdk \
        --gpus all \
        -it \
        isaacbuild:latest \
        /bin/bash

(The above /dev/video2 seems to be a content that is not particularly problematic because I modified it.)
“device_id”: 0 → “device_id”: 2

However, it appeared on the screen as follows.

root@mintlab:/home/mint-lab/isaac/sdk# bazel run //apps/samples/my_camera
Starting local Bazel server and connecting to it...
INFO: Analyzed target //apps/samples/my_camera:my_camera (80 packages loaded, 5104 targets configured).
INFO: Found 1 target...
INFO: Deleting stale sandbox base /root/.cache/bazel/_bazel_root/26ce42eb145d1da80994ac40c5475a12/sandbox
Target //apps/samples/my_camera:my_camera up-to-date:
  bazel-bin/apps/samples/my_camera/run_my_camera
  bazel-bin/apps/samples/my_camera/my_camera
INFO: Elapsed time: 5.859s, Critical Path: 0.34s
INFO: 0 processes.
INFO: Build completed successfully, 1 total action
INFO: Build completed successfully, 1 total action
2022-02-09 01:39:26.922 WARN  external/com_nvidia_isaac_engine/engine/alice/backend/application_json_loader.cpp@183: This application does not have an explicit scheduler configuration. One will be autogenerated to the best of the system's abilities if possible.
2022-02-09 01:39:26.922 INFO  external/com_nvidia_isaac_engine/engine/alice/backend/redis_backend.cpp@40: Successfully connected to Redis server.

2022-02-09 01:39:26.923 WARN  external/com_nvidia_isaac_engine/engine/alice/backend/backend.cpp@200: This application does not have an execution group configuration. One will be autogenerated to the best of the systems abilities if possible.
2022-02-09 01:39:26.923 WARN  external/com_nvidia_isaac_engine/engine/gems/scheduler/scheduler.cpp@341: No default execution groups specified. Attempting to create scheduler configuration for 16 remaining cores. This may be non optimal for the system and application.
2022-02-09 01:39:26.923 INFO  external/com_nvidia_isaac_engine/engine/gems/scheduler/scheduler.cpp@291: Scheduler execution groups are:
2022-02-09 01:39:26.923 INFO  external/com_nvidia_isaac_engine/engine/gems/scheduler/scheduler.cpp@300: __BlockerGroup__: Cores = [2, 3, 4, 5], Workers = No
2022-02-09 01:39:26.923 INFO  external/com_nvidia_isaac_engine/engine/gems/scheduler/scheduler.cpp@300: __WorkerGroup__: Cores = [15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 1, 0], Workers = Yes
2022-02-09 01:39:26.925 INFO  external/com_nvidia_isaac_engine/engine/alice/backend/modules.cpp@271: Loaded module 'packages/sensors/libv4l2_camera_module.so': Now has 28 components total
2022-02-09 01:39:26.928 INFO  external/com_nvidia_isaac_engine/engine/alice/backend/modules.cpp@271: Loaded module 'packages/sight/libsight_module.so': Now has 33 components total
2022-02-09 01:39:26.934 INFO  external/com_nvidia_isaac_engine/engine/alice/backend/modules.cpp@271: Loaded module 'packages/viewers/libviewers_module.so': Now has 66 components total
2022-02-09 01:39:26.934 INFO  packages/sight/sight_start.cpp@157: Loading websight...
2022-02-09 01:39:26.934 DEBUG external/com_nvidia_isaac_engine/engine/alice/application.cpp@321: Loaded 66 components: isaac::V4L2Camera, isaac::alice::BufferAllocatorReport, isaac::alice::ChannelMonitor, isaac::alice::CheckJetsonPerformanceModel, isaac::alice::CheckOperatingSystem, isaac::alice::Config, isaac::alice::ConfigBridge, isaac::alice::ConfigLoader, isaac::alice::Failsafe, isaac::alice::FailsafeHeartbeat, isaac::alice::InteractiveMarkersBridge, isaac::alice::LifecycleReport, isaac::alice::MessageLedger, isaac::alice::MessagePassingReport, isaac::alice::NodeStatistics, isaac::alice::Pose, isaac::alice::PoseInitializer, isaac::alice::PoseTree, isaac::alice::PyCodelet, isaac::alice::Random, isaac::alice::Scheduling, isaac::alice::Sight, isaac::alice::SightChannelStatus, isaac::alice::Subgraph, isaac::alice::Subprocess, isaac::alice::Throttle, isaac::alice::TimeOffset, isaac::alice::TimeSynchronizer, isaac::map::Map, isaac::map::ObstacleAtlas, isaac::map::OccupancyGridMapLayer, isaac::map::PolygonMapLayer, isaac::map::WaypointMapLayer, isaac::navigation::DistanceMap, isaac::navigation::NavigationMap, isaac::navigation::RangeScanModelClassic, isaac::navigation::RangeScanModelFlatloc, isaac::sight::AliceSight, isaac::sight::PoseTreeJsonBridge, isaac::sight::SightTunnel, isaac::sight::SightWidget, isaac::sight::WebsightServer, isaac::viewers::BinaryMapViewer, isaac::viewers::DepthCameraViewer, isaac::viewers::Detections3Viewer, isaac::viewers::DetectionsViewer, isaac::viewers::FiducialsViewer, isaac::viewers::FlatscanViewer, isaac::viewers::GoalViewer, isaac::viewers::ImageKeypointViewer, isaac::viewers::ImageViewer, isaac::viewers::LidarViewer, isaac::viewers::MosaicViewer, isaac::viewers::ObjectViewer, isaac::viewers::OccupancyMapViewer, isaac::viewers::ParkingSpotListViewer, isaac::viewers::Plan2Viewer, isaac::viewers::PointCloudViewer, isaac::viewers::Polyline2Viewer, isaac::viewers::PoseTrailViewer, isaac::viewers::SegmentationCameraViewer, isaac::viewers::SegmentationViewer, isaac::viewers::SkeletonViewer, isaac::viewers::TensorViewer, isaac::viewers::TrajectoryListViewer, isaac::viewers::deprecated::ColorCameraViewer, 
2022-02-09 01:39:26.934 WARN  external/com_nvidia_isaac_engine/engine/alice/application.cpp@173: The function Application::findComponentByName is deprecated. Please use `getNodeComponentOrNull` instead. Note that the new method requires a node name instead of a component name. (argument: 'websight/isaac.sight.AliceSight')
2022-02-09 01:39:26.934 DEBUG external/com_nvidia_isaac_engine/engine/alice/application.cpp@321: Loaded 66 components: isaac::V4L2Camera, isaac::alice::BufferAllocatorReport, isaac::alice::ChannelMonitor, isaac::alice::CheckJetsonPerformanceModel, isaac::alice::CheckOperatingSystem, isaac::alice::Config, isaac::alice::ConfigBridge, isaac::alice::ConfigLoader, isaac::alice::Failsafe, isaac::alice::FailsafeHeartbeat, isaac::alice::InteractiveMarkersBridge, isaac::alice::LifecycleReport, isaac::alice::MessageLedger, isaac::alice::MessagePassingReport, isaac::alice::NodeStatistics, isaac::alice::Pose, isaac::alice::PoseInitializer, isaac::alice::PoseTree, isaac::alice::PyCodelet, isaac::alice::Random, isaac::alice::Scheduling, isaac::alice::Sight, isaac::alice::SightChannelStatus, isaac::alice::Subgraph, isaac::alice::Subprocess, isaac::alice::Throttle, isaac::alice::TimeOffset, isaac::alice::TimeSynchronizer, isaac::map::Map, isaac::map::ObstacleAtlas, isaac::map::OccupancyGridMapLayer, isaac::map::PolygonMapLayer, isaac::map::WaypointMapLayer, isaac::navigation::DistanceMap, isaac::navigation::NavigationMap, isaac::navigation::RangeScanModelClassic, isaac::navigation::RangeScanModelFlatloc, isaac::sight::AliceSight, isaac::sight::PoseTreeJsonBridge, isaac::sight::SightTunnel, isaac::sight::SightWidget, isaac::sight::WebsightServer, isaac::viewers::BinaryMapViewer, isaac::viewers::DepthCameraViewer, isaac::viewers::Detections3Viewer, isaac::viewers::DetectionsViewer, isaac::viewers::FiducialsViewer, isaac::viewers::FlatscanViewer, isaac::viewers::GoalViewer, isaac::viewers::ImageKeypointViewer, isaac::viewers::ImageViewer, isaac::viewers::LidarViewer, isaac::viewers::MosaicViewer, isaac::viewers::ObjectViewer, isaac::viewers::OccupancyMapViewer, isaac::viewers::ParkingSpotListViewer, isaac::viewers::Plan2Viewer, isaac::viewers::PointCloudViewer, isaac::viewers::Polyline2Viewer, isaac::viewers::PoseTrailViewer, isaac::viewers::SegmentationCameraViewer, isaac::viewers::SegmentationViewer, isaac::viewers::SkeletonViewer, isaac::viewers::TensorViewer, isaac::viewers::TrajectoryListViewer, isaac::viewers::deprecated::ColorCameraViewer, 
2022-02-09 01:39:26.935 INFO  external/com_nvidia_isaac_engine/engine/alice/application.cpp@295: Starting application 'my_camera' (instance UUID: '1deb5f90-8949-11ec-b93a-879d1a03c8fe') ...
2022-02-09 01:39:26.935 DEBUG external/com_nvidia_isaac_engine/engine/gems/scheduler/execution_groups.cpp@476: Launching 0 pre-start job(s)
2022-02-09 01:39:26.935 DEBUG external/com_nvidia_isaac_engine/engine/gems/scheduler/execution_groups.cpp@485: Replaying 0 pre-start event(s)
2022-02-09 01:39:26.936 DEBUG external/com_nvidia_isaac_engine/engine/gems/scheduler/execution_groups.cpp@476: Launching 0 pre-start job(s)
2022-02-09 01:39:26.936 DEBUG external/com_nvidia_isaac_engine/engine/gems/scheduler/execution_groups.cpp@485: Replaying 0 pre-start event(s)
2022-02-09 01:39:26.936 INFO  packages/sight/WebsightServer.cpp@247: Sight webserver is loaded
2022-02-09 01:39:26.936 INFO  packages/sight/WebsightServer.cpp@248: Please open Chrome Browser and navigate to http://<ip address>:3000
2022-02-09 01:39:26.937 WARN  external/com_nvidia_isaac_engine/engine/alice/backend/codelet_canister.cpp@229: Codelet 'websight/isaac.sight.AliceSight' was not added to scheduler because no tick method is specified.
2022-02-09 01:39:26.937 WARN  external/com_nvidia_isaac_engine/engine/alice/components/Codelet.cpp@53: Function deprecated. Set tick_period to the desired tick parameter
2022-02-09 01:39:26.968 WARN  external/com_nvidia_isaac_engine/engine/alice/backend/codelet_canister.cpp@229: Codelet '_check_operating_system/isaac.alice.CheckOperatingSystem' was not added to scheduler because no tick method is specified.
2022-02-09 01:39:26.968 WARN  external/com_nvidia_isaac_engine/engine/alice/components/Codelet.cpp@53: Function deprecated. Set tick_period to the desired tick parameter
2022-02-09 01:39:26.968 WARN  external/com_nvidia_isaac_engine/engine/alice/components/Codelet.cpp@53: Function deprecated. Set tick_period to the desired tick parameter
2022-02-09 01:39:27.843 INFO  packages/sight/WebsightServer.cpp@117: Server connected / 1
2022-02-09 01:39:36.935 INFO  external/com_nvidia_isaac_engine/engine/alice/backend/allocator_backend.cpp@57: Optimized memory CPU allocator.
2022-02-09 01:39:36.936 INFO  external/com_nvidia_isaac_engine/engine/alice/backend/allocator_backend.cpp@66: Optimized memory CUDA allocator.
2022-02-09 01:39:40.367 INFO  packages/sight/WebsightServer.cpp@131: Disconnected
2022-02-09 01:39:44.401 INFO  packages/sight/WebsightServer.cpp@117: Server connected / 1


no image, just black screen…

Please help me…

Sorry guys. I solved it. What I need is right fit of camera width and height