devcontainer，如何使X显示工作（在VisualStudio代码中在docker内部装载图形）

通常我用这个技巧让X在docker内部工作：

docker run --rm -it -v /tmp/.X11-unix:/tmp/.X11-unix -v $HOME/Videos:/videos -e DISPLAY=unix$DISPLAY --name knl kdenlive

我在一个devcontainer上也尝试过这样做：

{
    "name": "example_dockerized_environment",
    "dockerFile": "Dockerfile",
    "extensions": [
        "ms-vscode.cpptools",
        "twxs.cmake",
        "eamodio.gitlens"
    ],
    "mounts": [ "source=../,target=/home/project", "source=/tmp/.X11-unix, target=/tmp/.X11-unix"],
    "containerEnv": {
        "DISPLAY": "unix:0"
    },
    "runArgs": ["--privileged"]
}

root@5e6a10efbea6:/tmp# ls -la /tmp 
total 16
drwxrwxrwt 1 root root 4096 Mar 18 03:47 .
drwxr-xr-x 1 root root 4096 Mar 18 03:45 ..
srwxr-xr-x 1 root root    0 Mar 18 03:42 vscode-git-askpass-c2ca47727522d7940b4cce1d99fcc88d32ccfefc.sock
srwxr-xr-x 1 root root    0 Mar 18 03:47 vscode-git-ipc-f52b0dbfd870db22481ea656170b7615ea1e6497.sock
srwxr-xr-x 1 root root    0 Mar 18 03:45 vscode-ipc-032f3099-16ea-4f5d-8561-586571a4aea9.sock
srwxr-xr-x 1 root root    0 Mar 18 03:32 vscode-ipc-425af2fc-ddb1-4554-b93b-3a5bede4c52d.sock
srwxr-xr-x 1 root root    0 Mar 18 03:47 vscode-ipc-58739ccc-fb7d-4289-808e-21d31c703d1a.sock
srwxr-xr-x 1 root root    0 Mar 18 03:42 vscode-ipc-aa7aed50-92e4-4b2b-b17e-d70c1bba595e.sock
-rw-r--r-- 1 root root 2342 Mar 18 03:46 vscode-remote-containers-6a199ce05d20a43a350860289798f388414d648c.js
srwxr-xr-x 1 root root    0 Mar 18 03:46 vscode-remote-containers-ipc-6a199ce05d20a43a350860289798f388414d648c.sock
srwxr-xr-x 1 root root    0 Mar 18 03:46 vscode-ssh-auth-6a199ce05d20a43a350860289798f388414d648c.sock
drwxr-xr-x 2 root root 4096 Mar 18 03:46 vscode-typescript0
root@5e6a10efbea6:/tmp# 

如您所见，我通过了

unix$DISPLAY

，还挂载了

x11unix

但我明白了

root@5e6a10efbea6:/workspaces/leuze_lidar_volume/sdk/quanergy_client-master# ./visualizer --host localhost
ERROR: In /build/vtk6-YpT4yb/vtk6-6.2.0+dfsg1/Rendering/OpenGL/vtkXOpenGLRenderWindow.cxx, line 1466
vtkXOpenGLRenderWindow (0x2293740): bad X server connection. DISPLAY=Aborted (core dumped)

当我在docker内部执行echo$DISPLAY时，我什么也看不到。我试过了

export

DISPLAY=unix:0

然后我得到

root@5e6a10efbea6:/workspaces/leuze_lidar_volume/sdk/quanergy_client-master# ./visualizer --host localhost
ERROR: In /build/vtk6-YpT4yb/vtk6-6.2.0+dfsg1/Rendering/OpenGL/vtkXOpenGLRenderWindow.cxx, line 1466
vtkXOpenGLRenderWindow (0x281dcf0): bad X server connection. DISPLAY=unix:0. Aborting.


Aborted (core dumped)

我在容器中也没有看到

/tmp.x11 unix

：

{
    "name": "example_dockerized_environment",
    "dockerFile": "Dockerfile",
    "extensions": [
        "ms-vscode.cpptools",
        "twxs.cmake",
        "eamodio.gitlens"
    ],
    "mounts": [ "source=../,target=/home/project", "source=/tmp/.X11-unix, target=/tmp/.X11-unix"],
    "containerEnv": {
        "DISPLAY": "unix:0"
    },
    "runArgs": ["--privileged"]
}

root@5e6a10efbea6:/tmp# ls -la /tmp 
total 16
drwxrwxrwt 1 root root 4096 Mar 18 03:47 .
drwxr-xr-x 1 root root 4096 Mar 18 03:45 ..
srwxr-xr-x 1 root root    0 Mar 18 03:42 vscode-git-askpass-c2ca47727522d7940b4cce1d99fcc88d32ccfefc.sock
srwxr-xr-x 1 root root    0 Mar 18 03:47 vscode-git-ipc-f52b0dbfd870db22481ea656170b7615ea1e6497.sock
srwxr-xr-x 1 root root    0 Mar 18 03:45 vscode-ipc-032f3099-16ea-4f5d-8561-586571a4aea9.sock
srwxr-xr-x 1 root root    0 Mar 18 03:32 vscode-ipc-425af2fc-ddb1-4554-b93b-3a5bede4c52d.sock
srwxr-xr-x 1 root root    0 Mar 18 03:47 vscode-ipc-58739ccc-fb7d-4289-808e-21d31c703d1a.sock
srwxr-xr-x 1 root root    0 Mar 18 03:42 vscode-ipc-aa7aed50-92e4-4b2b-b17e-d70c1bba595e.sock
-rw-r--r-- 1 root root 2342 Mar 18 03:46 vscode-remote-containers-6a199ce05d20a43a350860289798f388414d648c.js
srwxr-xr-x 1 root root    0 Mar 18 03:46 vscode-remote-containers-ipc-6a199ce05d20a43a350860289798f388414d648c.sock
srwxr-xr-x 1 root root    0 Mar 18 03:46 vscode-ssh-auth-6a199ce05d20a43a350860289798f388414d648c.sock
drwxr-xr-x 2 root root 4096 Mar 18 03:46 vscode-typescript0
root@5e6a10efbea6:/tmp# 

这项工作：

{
    "name": "my_docker_environment",
    "dockerFile": "Dockerfile",
    "extensions": [
        "ms-vscode.cpptools",
        "twxs.cmake",
        "eamodio.gitlens",
        "ms-vscode.cmake-tools"
    ],
    "containerEnv": {
        "DISPLAY": "unix:0"
    },
    "mounts": [
        "source=/tmp/.X11-unix,target=/tmp/.X11-unix,type=bind,consistency=cached"
      ],
    "runArgs": ["--privileged"]
}

我不记得是否需要

“runArgs”：[“--privileged”]

，但我想不需要

您可能需要这样做

xhost local:root

---

从2021年3月起，在主机上的终端上启动您的应用程序

对我有效，无需使用

---priviliged