Description of problem:

There is currently an issue in the Docker image (Jenkins master) jenkins-rhel8:v4.13.0-1698293442

Jenkins master from said image uses the route Kinds .spec.host to calculate the value for the variable{{ JENKINS_URL. }}This has the following consequences:

• when specifying subdomain to create a route to Jenkins, it makes the return URL from Jenkins wrong (null)
• jenkins master uses the Kind:route elements .spec.host to calculate JENKINS_URL which is used as callback URL.

A workaround consists in modifying the file /usr/libexec/s2i/run in Jenkins master image as follows:

sed -i 's/ .spec.host / .status.ingress[].host /g' /usr/libexec/s2i/run

Would be good to have this change (or an equivalent one) evaluated and incorporated in a newer version of the image.

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