Arch s390x has JRE but most builds of java needs jdk

I tried to insdtall jdk8 by hack from JDK 8 and Maven missing in ARM64 despite `jdk: openjdk8` - #12 by native-api, but it does not work
here is example of failure: Travis CI - Test and Deploy with Confidence
Error: dl failure on line 894; Error: failed /usr/lib/jvm/adoptopenjdk-8-hotspot-s390x/jre/lib/s390x/server/libjvm.so, because libffi.so.6: cannot open shared object file: No such file or directory