change Elastic Beanstalk docker build timeout option

I am using Elastic Beanstalk with Docker platform.

When i deploy to EB, it shows docker build failure log with docker build timeout. i guess my project needs more time to build dockerfile.

so i want increase docker build timeout option on EB.

I tried to write .ebextensions/increase-timeout.config file with following option settings

option_settings:
  - namespace: aws:elasticbeanstalk:command
    option_name: Timeout
    value: 1000

It just increase EB command timeout option not the docker build timeout.

how can i change EB docker build timeout option ? ?