Dockerfile compile error: object CRC32C is not a member of package java.util.zip

[darwin]

I'm trying to build Eclair in docker in Simverse.

Git bisect pointed to 2f42538 introduced compiler error object CRC32C is not a member of package java.util.zip [1].

It is probably caused by this: 2f42538#diff-094980f368988747a739b31df72815b8R19

I'm a Java noob. I tried to look for any changes in Dockerfiles on your side and didn't find anything where I got out of sync. Is this CRC32C a thing in older Java?

Observations:

1. Running docker build . from tip of the eclair repo, fails in the same way
2. DockerHub CI builds work, because (I assume) they run on top of Java 11

[1] https://travis-ci.org/darwin/simverse/builds/578231444#L7799-L7805

[araspitzu]

I can confirm the docker build is broken because it uses an outdated JDK version to compile eclair (in which java.util.zip.CRC32C doesn't exist), thanks for reporting.