

Oh interesting, I didn’t know that was a thing
Quoting from: https://www.reddit.com/r/synology/comments/1bapfkl
The armv8 architecture which the DS218 uses is supported by Container Manager, Synology just put a hardcoded config into the official package to exclude certain models from installing it:
exclude_model="synology_rtd1296_ds118 synology_rtd1296_ds218 synology_rtd1296_ds218play synology_rtd1296_ds418 synology_rtd1296_ds418j synology_armada37xx_ds119j synology_rtd1296_rs819"
Pretty sure the https://github.com/007revad/ContainerManager_for_all_armv8 linked above just removes the hardcoded exclusion and doesn’t need to change anything else to get it to work.
If that workaround looks shady, you might be better off just installing docker directly
Makes me think of Original Position / veil of ignorance
https://en.m.wikipedia.org/wiki/Original_position