Setting heap size at docker-compose

[rancor (Nico)]

At a docker-compose for an ELK stack, I have set up ES like this:

elasticsearch:
  image: elasticsearch:latest
  command: elasticsearch
  environment:
    - "ES_JAVA_OPTS=-Xms3g -Xmx3g"
  volumes:
    - ./elasticsearch/storage:/usr/share/elasticsearch/data
  ports:
    - "9200:9200"
    - "9300:9300"

But, when running docket top es-container, I'm still seeing heap size as 2g (from jvm.options file inside the container) and after that, the 3g I set:

UID                 PID                 PPID                C                   STIME               TTY                 TIME                CMD
102                 17420               17403               21                  00:00               ?                   03:00:18            /docker-java-home/jre/bin/java -Xms2g -Xmx2g -XX:+UseConcMarkSweepGC -XX:CMSInitiatingOccupancyFraction=75 -XX:+UseCMSInitiatingOccupancyOnly -XX:+AlwaysPreTouch -server -Xss1m -Djava.awt.headless=true -Dfile.encoding=UTF-8 -Djna.nosys=true -Djdk.io.permissionsUseCanonicalPath=true -Dio.netty.noUnsafe=true -Dio.netty.noKeySetOptimization=true -Dio.netty.recycler.maxCapacityPerThread=0 -Dlog4j.shutdownHookEnabled=false -Dlog4j2.disable.jmx=true -Dlog4j.skipJansi=true -XX:+HeapDumpOnOutOfMemoryError -Xms3g -Xmx3g -Des.path.home=/usr/share/elasticsearch -cp /usr/share/elasticsearch/lib/* org.elasticsearch.bootstrap.Elasticsearch

Is it taking 2g or 3g? I don't have ps, top or some tools like that at the es container, I'm using the latest image BTW.

Thanks