Docker containers are split in two major elements :
the elements that can change (settings, DBs, etc.), that's on your appdata
and those that do not change, that's in the docker image
For performance reasons, it is generally better to have both on SSDs and so on a Pool. And they would stay on the Pool with the settings above.
Note that with 6.12, the wording and organisation of those settings in Shares has changed. While the ideas behind the choice are the same, the things are organized differently and might be easier to understand. (the Exclusive access part is optional)