Docker is reversing its original plan 
This means we do not need to migrate our images.
from: Docker
date: Mar 24, 2023, 5:25 PM
subject: We’re no longer sunsetting Free Team organizationsOn March 14, 2023, we emailed you about your Free Team subscription, outlining our intention to sunset that plan. After listening to the concerns of the community, we’ve decided to reverse course, and are no longer sunsetting the Free Team plan.
If you’re currently on the Free Team plan, you no longer have to migrate to another plan by April 14. All customers who upgraded to a paid subscription will automatically receive a full refund for the transaction in the next 30 days, allowing them to use their new paid subscription for free for the duration of the term they purchased.