Docker runs GUI software and displays the interface in the container

The core is to use the local display, adding some configuration before launching the Docker Image

1. Install the dependencies on the machine first (only need to be executed once, subsequent commands need to be executed every time a DOCker that requires a GUI is started)

sudo apt-get install x11-xserver-utils
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2. Open access

xhost +
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3. Add docker parameter options
   • -v /tmp/.X11-unix:/tmp/.X11-unix \: Shares the local Unix port
   • -e DISPLAY=unix$DISPLAY \: Modifies the environment variable DISPLAY
   • -e GDK_SCALE
   • -e GDK_DPI_SCALE

The command to finally start the testName :v0 mirror is:

xhost +

sudo docker run -it \
  -v /etc/localtime:/etc/localtime:ro \
  -v /tmp/.X11-unix:/tmp/.X11-unix \
  -e DISPLAY=unix$DISPLAY \
  -e GDK_SCALE \
  -e GDK_DPI_SCALE \
  testname:v0 \
  /bin/bash
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After starting some drawing or GUI Windows in the container, you can use the display screen to display the window