Building Docker Image for Cisco 9000 Series Switches

[Atomicbeast101]

I am trying to get a custom Python docker image built and saved as .tar file to run on our Cisco 9500 switch in the environment. The older version of Docker (v24.X.X) built the image in the legacy format (seen below) and was able to run it on the switch without any issues (using docker build command).

Legacy Format from agent.tar file:

However, I tried building the image using the latest Docker version (our DevOps agent uses v26) and it seems it builds the image in OCI format which is something that our switch can't recognize (throws error stating that it cannot find "blobs" folder for some reason).
OCI Format from agent.tar file:

Is there a way to build the legacy format version using docker buildx command? Some reason using --options type=docker does not do anything, it keeps getting built to OCI format...

My computer is using Docker v27.3.1.
 
Any assistance is appreciated.