Hey what’s the output of fly version?
Once you check that, worth trying fly version update.
We had a version just over a week ago that accidentally bumped a patch version of Go that introduced a slight regression on some of the Docker tooling
If you’re experiencing it using local-only, I believe I saw that Docker itself was affected at one point, it might be worth making sure you’re up to date on Docker as well if you’re looking to use local-only.