We’ll definitely need more information. It is best to provide detailed information as a bug report to https://issues.jenkins.io/
I attempted to duplicate the problem with the following Dockerfile:
FROM fedora:38
RUN curl -o /etc/yum.repos.d/jenkins.repo https://pkg.jenkins.io/redhat-stable/jenkins.repo
RUN rpm --import https://pkg.jenkins.io/redhat-stable/jenkins.io-2023.key
RUN dnf upgrade -y
RUN dnf install -y fontconfig java-11-openjdk
RUN dnf install -y jenkins
RUN curl -L -o /tmp/jenkins-2.414.3.war https://get.jenkins.io/war-stable/2.414.3/jenkins.war
USER jenkins
ENTRYPOINT java -jar /tmp/jenkins-2.414.3.war
I built and ran that Dockerfile with the command:
$ docker build -t sample:1 .
$ docker run --rm -p 8080:8080 -i -t sample:1
I opened that Jenkins page from that machine in my web browser and confirmed that the end of life admin monitor displayed as follows:
That output is what I expected to see, since Fedora 38 is end of life as of 18 May 2024.