As long as you still have the app data folder than re-creating the docker image isnt really an issue.
You will have to install your containers again.
Just make sure to create any custom networks before you try installing a bunch of previous apps at the same time.
(The previous network wont be there and all containers will have no network) Easy fix but annoying!
Also forgot to say, did you confirm your docker image is actually in the path specified in docker settings?
Stop docker if not, move it to the location specified (Or change the location to wherever it is now) and start docker again.