Publish multiplatform docker images on docker.io to support arm64

[aran]

Is your feature request related to a problem? Please describe.

Some cloud providers offer arm64 execution environments at good prices. All new macs offer arm64. For developing on a mac, or targeting arm64 deployments, it would be useful to have multiplatform linux/arm64 + linux/amd64 docker images for releases.

Proposed Solution
Update ubercadence/server and ubercadence/web CI to build and publish multiplatform linux/arm64 + linux/amd64 docker images.

Additional context
N/A

[demirkayaender]

@neil-xie can we include this in our release process?

[neil-xie]

#5962 this will multiple platform docker images on server release