Docker内运行GUI程序¶

开放权限允许程序访问X11的显示接口
```
apt-get install x11-xserver-utils
xhost +
```

启动docker时添加额外选项

-v /tmp/.X11-unix:/tmp/.X11-unix
-e DISPLAY=unix$DISPLAY
-e GDK_SCALE
-e GDK_DPI_SCALE

进入docker后确认DISPLAY环境变量的值，一般都是unix:0，如果不是的话，可以手动export DISPLAY=unix:0 如果使用Opencv-Python中的cv2.imshow()出现了错误

qt.qpa.xcb: could not connect to display unix
qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "/usr/local/lib/python3.7/dist-packages/cv2/qt/plugins" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

Available platform plugins are: xcb.

可以降低OpenCV的版本来解决

pip install opencv-python==4.1.2.30

Docker内运行GUI程序¶

Docker内运行GUI程序¶

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