Error "Could not connect to any X display"

[cmzambranat]

I found an error when running qgis_run.sh file:

Files dir:/Users/uyuni/qgis34-files
Preferences dir:/Users/uyuni/.qgis34-docker
root@0aed1466fdea:~# qgis
Warning: QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-root'
Warning: QXcbConnection: Could not connect to display /private/tmp/com.apple.launchd.vYkqXEn8SJ/org.macosforge.xquartz:0
Critical: Could not connect to any X display.

I was able to fix by editing qgis_run.sh to:

docker run -ti  --rm \
	-e DISPLAY=$(ipconfig getifaddr en0):0 \
	-v /tmp/.X11-unix:/tmp/.X11-unix \
	-v $my_homedir:/mnt/ext_home/ \
	-v $my_files_dir:/root/qgis36-files \
	-v $my_profile_dir:/root/ \
	rafdouglas/qgis_desktop:latest

A few notes:

1. last line needs to be changed from rafdouglas/qgis_desktop:3.6 to rafdouglas/qgis_desktop:latest. Otherwise it will look for QGIS v3.6
2. might be worth it to maintain the same directory names as the QGIS version. Currently directory names are qgis34-files and docker image is 3.8.0
3. I'm using a Mac OS 10.14.6