Allow graylog in docker to use multiple cores

[jochen]

@vasrem

• graylog2/server:2.4.3-3

Try using graylog/graylog:2.4.5-1.

The JVM used in the old graylog2/server Docker image doesn’t support Docker (see https://blogs.oracle.com/java-platform-group/java-se-support-for-docker-cpu-and-memory-limits). You’ll also have to update your GRAYLOG_SERVER_JAVA_OPTS environment variable accordingly.

Also see:

Graylog2/server docker hub handle abandoned?

The graylog2/server Docker image will eventually be replaced by the graylog/graylog Docker image.