refactor: refactoring example to using Kratos SelfService UI Node Docker image

[Jorgagu]

Related Issue or Design Document

Refactoring example now Kratos SelfService UI Node is updated with the implementation of Hydra Consent screen. PR of Kratos SeftService UI Node containing the code used previously in the example: https://github.com/ory/kratos-selfservice-ui-node/pull/257

Checklist

• [x] I have read the contributing guidelines and signed the CLA.
• [ ] I have referenced an issue containing the design document if my change introduces a new feature.
• [x] I have read the security policy.
• [x] I confirm that this pull request does not address a security vulnerability. If this pull request addresses a security vulnerability, I confirm that I got approval (please contact security@ory.sh) from the maintainers to push the changes.
• [ ] I have added tests that prove my fix is effective or that my feature works.
• [x] I have added the necessary documentation within the code base (if appropriate).

Further comments

[Jorgagu]

@aeneasr @vinckr can you review this ?

[vinckr]

Hey @Jorgagu Apologies missed this, will review - thanks for the contribution!

[Jorgagu]

:wave: @vinckr any update or review on this PR ?