[keycloak-user] Error while building inside a container

[Rafael Weingärtner]

Hello, Keycloak community,
I am trying to build Keycloak 4.0.0Final, but I keep getting the following
error:

Results :
> Tests in error:
>
> JavascriptAdapterTest.org.keycloak.testsuite.adapter.javascript.JavascriptAdapterTest
> ? Runtime
>
> DemoFilterServletAdapterTest.org.keycloak.testsuite.adapter.servlet.DemoFilterServletAdapterTest
> ? Runtime
>
> DemoServletsAdapterTest.org.keycloak.testsuite.adapter.servlet.DemoServletsAdapterTest
> ? Runtime
>
> Tests run: 1703, Failures: 0, Errors: 3, Skipped: 247
>

I am not understanding it. Has someone here seen something similar? I am
running the build inside a docker container, can this be the problem?
Can I be missing some dependency or something else?

I am using a Debian 8.11, Java 8_171 and  maven 3.5.4. When I try to build
using a bare server, everything works.

--
Rafael Weingärtner