I've installed Docker on openwrt but Luci gui doesnt' work well and I'm not able to change the docker root dir.
Please could you help me to change the docker root dir to my usb drive connected to the router ?
As you can See I've changed in the configuration menu but in the overview menu is still the old dir ..
Well, the bug in your other post was known and common. However, GL-inet's fork is very significantly different than official OpenWrt. This means that the answers may be different, and that is why you can either run official OpenWrt and ask for help here, or you can ask on the gl-inet forums where there are people with specific knowledge of their fork.