JDK version

[vadiole]

Problem

Is seems like the JDK version used to run detekt is 11.
From Dockerfile:

RUN apk --no-cache --update add git curl openjdk11 bash \
    && rm -rf /var/cache/apk/*

This makes it impossible to run custom detekt rules, compiled with target version higher then 11:

java -jar /opt/detekt.jar --config detekt-ruleset.yml --report xml:detekt_report.xml --excludes **/build/**,**/.idea/** --plugins /opt/detekt-formatting.jar,detekt-custom-rules/compiled-rules.jar 
java.lang.UnsupportedClassVersionError: com/project/detektcustomrules/RuleSetProvider has been compiled by a more recent version of the Java Runtime (class file version 61.0), this version of the Java Runtime only recognizes class file versions up to 55.0

Question

Could there be a way to bump/specify a java version for the action?
Is there something behind the choice of version 11, or could it be changed easily?

[alaegin]

Hello!

Thanks for the report. I think we can upgrade Java version to 17. (According to this table)

The reason for jdk 11 is that I copied this Dockerfile from my internal tools several years ago. It was created for the older version of Detekt where jdk 11 was a requirement