Edit based on feedback.
Please add kmod-dm to GL-MT6000/v4.8.2 repos and test to ensure dockerd will properly install.
Thanks.
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Dockerd fails to install as kmod-dm is not available in the current repo. This seems to be a typical issue on release of a new firmware for the Flint 2.
FWIW/FYI: GL's repos aren't a 1:1 sync with OWRT's. They've been known to compile missing & add to their repos on request.
cat /etc/opkg/distfeeds.conf
Aware that this is typical. I was assuming this was the place to make the request. If not, where do I need to post?
src/gz glinet_core ``https://fw.gl-inet.com/releases/mt798x/kmod-5.4.246/aarch64_cortex-a53/mediatek
src/gz glinet_gli_pub ``https://fw.gl-inet.com/releases/mt798x/packages-4.5/aarch64_cortex-a53/glinet
src/gz glinet_gli_packages ``https://fw.gl-inet.com/releases/mt798x/packages-4.5/aarch64_cortex-a53/packages
I'd identify all the packages need, post them in a list ITT then retitle to '[Ftr Req]: Add Docker to GL-MT600/v4.8.2 Repos'. Then cross your fingers.
... keep in mind you could always just flash stock/pure OWRT:
Thanks. 
Hello,
Please try to install the op24 firmware for Flint2:
root@GL-MT6000:~# opkg list | grep kmod-dm
kmod-dm - 6.6.93-r1 - Kernel module necessary for LVM2 support
kmod-dm-raid - 6.6.93-r1 - Kernel module necessary for LVM2 raid support
kmod-dm9000 - 6.6.93-r1 - Kernel driver for Davicom 9000 Ethernet adapters.
kmod-dma-buf - 6.6.93-r1 - DMA shared buffer support
root@GL-MT6000:~# cat /etc/glversion
4.8.2-op24