There is insufficient memory for the Java Runtime Environment to continue AWS Ec2

docker run --rm -p .........

Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=512m; support was removed in 8.0

#

# There is insufficient memory for the Java Runtime Environment to continue.

# Native memory allocation (mmap) failed to map 715849728 bytes for committing reserved memory.

# An error report file with more information is saved as:

# /usr/zeppelin/hs_err_pid1.log

Java HotSpot(TM) 64-Bit Server VM warning: INFO: os::commit_memory(0x00000000d5550000, 715849728, 0) failed; error='Cannot allocate memory' (errno=12)

[root@centos-1gb-sgp1-01 ~]# java -Xmx2G -Xms2G

-bash: java: command not found

solution : 

There isn't enough RAM for the Java program to run. please check your ram size