Regression: Redirect for non-application root path does not consider root path correctly

Describe the bug I have an application where I have configured a non-standard root path using quarkus.http.root-path=/foo. As of Quarkus 1.11 which introduces the non-application root path (defaulting to /q) I now need to go to http://localhost:8080/foo/q/swagger-ui/ to get to the Swagger UI. This makes sense. But there is also a redirect in place for http://localhost:8080/foo/q/swagger-ui/. Unfortunately this redirect is wrong as it redirects to http://localhost:8080/q/foo/swagger-ui/.

The same problem also applies to quarkus.smallrye-openapi.path.

Expected behavior The redirect URL for the Swagger UI (and the OpenAPI definition) should correctly consider the HTTP root path.

Actual behavior See bug description.

To Reproduce Create a minimal application which includes the OpenAPI extension and configures a non-standard quarkus.http.root-path.

Configuration

quarkus.http.root-path=/foo

Environment (please complete the following information):

• Output of uname -a or ver:
• Output of java -version:
• GraalVM version (if different from Java):
• Quarkus version or git rev: 1.11.0.CR1
• Build tool (ie. output of mvnw --version or gradlew --version):

[kenfinnigan]

It’s marked for backport triage so should be

[phillip-kruger]

Looking at it …