Spring boot bitbucket AWS beanstalk post actions script - spring-boot

Question

I have a spring boot app which is deployed to AWS Beanstalk via Bitbucket pipelines.
In the bitbucket-pipelines.yml, I create the app.jar file first which has 2 script files. Then in the script section, I deploy the jar file to AWS beanstalk as follows:
script:
- pipe: atlassian/aws-elasticbeanstalk-deploy:0.6.7
variables:
AWS_ACCESS_KEY_ID: '$AWS_ACCESS_KEY_ID'
AWS_SECRET_ACCESS_KEY: '$AWS_ACCESS_KEY_SECRET'
AWS_DEFAULT_REGION: 'xxxxxx'
APPLICATION_NAME: 'xxxxx'
ENVIRONMENT_NAME: 'xxxxx'
ZIP_FILE: 'myapp-$version.jar'
S3_BUCKET: '$S3_BUCKET'
VERSION_LABEL: 'myapp-${BITBUCKET_BUILD_NUMBER}'
COMMAND: 'all'
This works fine. The app is getting deployed. Now I want to run the 2 scripts which I put inside the jar file after the deployment. Basically these scripts do some tasks just before the app is ready to be used (soon after the successful deployment). Where do I define how to run those 2 scripts after the deployment to EBS?
I know bitbucket-pipelines.yml can have after-script section. But that runs before the EBS deployment and it is not happening inside the ec2 instance. Probably it is happening inside the bitbucket build server.
I also noticed that there are post deploy hooks in EBS. How do I declare those scripts in bitbucket-pipelines.yml? Or where do I put those scripts inside the myapp.jar file? Inside the myapp.jar, I have BOOT-INF, META-INF and orgspringframework stuff. I can copy those scripts inside the BOOT-INF/classes by Maven build.
Anyone has done this using spring boot, maven, bitbucket pipelines, AWS elasticbeanstalk etc?
The application source bundle I created using maven is the spring boot executable jar file (myapp.jar). Should I create a jar file wrapping the myapp.jar and include those .platform/hooks/postdeploy/scripts... etc?