Change the timezone in the Liferay's official Docker Image

Issue

• How to modify the OS-level timezone in Liferay's official Docker Image?

Environment

• Liferay DXP 7.4

Resolution

Please note: The following information involves customizations or implementation ideas that are beyond the scope of Liferay Support. Please exercise appropriate discretion in the use of this information to choose to follow it. 

• There is no OOS feature available to change the timezone of the docker image.
• However, in order to modify the timezone, one needs to customize the Dockerfile.ext

Additional Information

• Workaround to achieve this functionality: Add the below snippet in the Dockerfile.ext
  

  USER root
  
  ENV DEBIAN_FRONTEND=noninteractive
  
  RUN apt-get -y update && apt-get -y install tzdata
  
  ENV TZ="Asia/Kolkata"
  
  USER liferay