how to change UMASK value in bamboo 7.0.4 docker container

[Bala]

Hi

I changed the umask value from UMASK="0027" to UMASK="0022" inside bamboo container (/opt/bamboo/bin/Catalina.sh). But, when my bamboo container gets restarted the value is over written to default value UMASK="0027".

Please help me to fix it.

Thanks,