Upgrade your container image format

[cveld]

I coincidentally stumbled across your repo where you provide easy to use blue/green backend demo container images.

When I try to run your images docker yields the following deprecation warning:

[DEPRECATION NOTICE] Docker Image Format v1, and Docker Image manifest version 2, schema 1 support will be removed in an upcoming release. Suggest the author of docker.io/hanzel/nginx-html:1 to upgrade the image to the OCI Format, or Docker Image manifest v2, schema 2. More information at https://docs.docker.com/go/deprecated-image-specs/

Maybe you can republish your images with the latest format?