Hi there,

I currently can't run the jenkins-cli command "install-plugin" with the latest version of the jenkins-cli.jar. I get the following error:

ERROR: URI is not absolute

Downgrading jenkins to 2.426 makes install-plugin work again.
I haven't tested jenkins 2.427, but 2.428 definitly throws me this error, when I try to install/update a plugin over the CLI.

My command looks like this:

java -jar ./jenkins-cli.jar -s http://localhost:8080 -auth user:pw install-plugin credentials

Running it from within the docker container as root.

I have to say, the docker-image is jenkins/jenkins:lts-jdk11 from 04-05-2022.
If I update jenkins, I update the jenkins.war and the plugins within the container over a script.

This is a summary of that said script:

• Download latest jenkins-cli.jar from localhost/jnlpJars/jenkins-cli.jar
• Download latest jenkins.war
• Replace current jenkins.war and create a backup
• Get list of plugins with list-plugins and parse updatable plugins (that still works fine)
• Update plugins with install-plugin (this is, where the error occurs).

I tried different plugins, it is always the same error.

As I said, rollback to 2.426 and install-plugin works without a problem.

Maybe there is an easy solution to this, I'm just missing, because I'm not very good with URI related issues. Help would be highly appreciated.