add dockerfile for s390x as it needs openssl3

[cdeepali]

Checklist before submitting

• Did you read the contributor guide?
• Did you update any affected documentation?
• Did you write any tests to validate this change?

Description

To enable builds on s390x with openssl 3.* use a separate Dockefile for s390x.

Review process to land

1. All tests and other checks must succeed.
2. At least one maintainer must review and approve.
3. If any maintainer requests changes, they must be addressed.