This covers all the commands that are required to run JBoss on docker and change JVM_OPTIONS.

systemctl status docker.service

docker pull jboss/wildfly

docker run -it jboss/wildfly

docker run -it jboss/wildfly /opt/jboss/wildfly/bin/domain.sh -b 0.0.0.0 -bmanagement 0.0.0.0

1. Option1:

   docker run command to start an interactive bash session

   [user@node2 ~]# docker run -it jboss/wildfly /bin/bash
   [jboss@73759264c91f ~]$ ll
   total 0
   drwxrwxr-x. 10 jboss root 220 Aug 19  2016 wildfly
   [jboss@73759264c9 ~]$ cd wildfly/
   [jboss@73759264c9 wildfly]$ ll
   total 400
   -rw-rw-r--. 1 jboss root  26530 Aug 19  2016 LICENSE.txt
   -rw-rw-r--. 1 jboss root   2510 Aug 19  2016 README.txt
   drwxrwxr-x. 3 jboss root     27 Aug 19  2016 appclient
   drwxrwxr-x. 3 jboss root   4096 Jun  5 17:53 bin
   -rw-rw-r--. 1 jboss root   2451 Aug 19  2016 copyright.txt
   drwxrwxr-x. 6 jboss root     67 Aug 19  2016 docs
   drwxrwxr-x. 5 jboss root     50 Aug 19  2016 domain
   -rw-rw-r--. 1 jboss root 365666 Aug 19  2016 jboss-modules.jar
   drwxrwxr-x. 3 jboss root     20 Aug 19  2016 modules
   drwxrwxr-x. 6 jboss root     68 Aug 19  2016 standalone
   drwxrwxr-x. 2 jboss root    242 Jun  5 17:53 welcome-content
   [jboss@73759264c9 wildfly]$ cd bin/
   [jboss@73759264c9 bin]$ vi standalone.conf
   [jboss@73759264c9 bin]$ nohup ./standalone.sh &
   [1] 20
   [jboss@73759264c9 bin]$ nohup: ignoring input and appending output to 'nohup.out'
   [jboss@73759264c9 bin]$ ps -ef 
   UID         PID   PPID  C STIME TTY          TIME CMD
   jboss         1      0  0 11:45 ?        00:00:00 /bin/bash
   jboss        20      1  0 11:46 ?        00:00:00 /bin/sh ./standalone.sh
   jboss        65     20  0 11:46 ?        00:00:30 /usr/lib/jvm/java/bin/java -D[Standalone] -server -Xms512m -Xmx512m -XX:MetaspaceSize.....
   jboss       174      1  0 14:10 ?        00:00:00 ps -ef
   

   From the other terminal, check docker process:

   [root@node2 ~]# ps -ef 
   --
   --
   root      29886      2  0 17:15 ?        00:00:04 [xfsaild/dm-9]
   root      29890   8781  0 17:15 ?        00:00:00 /usr/bin/docker-containerd-shim-current 73759264c91fff410c1e417c7dad427a5ffb5e3bc5ba5
   1000      29905  29890  0 17:15 pts/1    00:00:00 /bin/bash
   1000      30050  29905  0 17:16 pts/1    00:00:00 /bin/sh ./standalone.sh
   1000      30095  30050  0 17:16 pts/1    00:00:31 /usr/lib/jvm/java/bin/java -D[Standalone] -server -Xms512m -Xmx512m -XX:MetaspaceSize
   root      34914      2  0 Jun24 ?        00:00:00 [kworker/0:2H]
   postfix   41092   1812  0 19:10 ?        00:00:00 pickup -l -t unix -u
   --
   --
   

   where pts1 for bin/bash; jboss process is the child process to /bin/bash

2. Option2:

   Start Jboss container like below:

   docker run -it --env JAVA_OPTS="-server -Xms512m -Xmx512m" jboss/wildfly
   

3. Option3 :

   Extend the standard image by creating a Dockerfile containing like below:

   FROM jboss/wildfly:latest
   COPY standalone.conf $JBOSS_HOME/bin/
   

   Then build and run the container:

   docker build --tag=wildfly-test .
   docker run -it wildfly-app