Added docker-compose compatibility version in readme to avoid Invalid interpolation format issue

[sanket-mundra]

Refers to this issues: #77

Description

Please include a summary of the change, motivation and context.

Testing

I downloaded the docker-compose.yml file using this:

curl -o docker-compose.yml https://raw.githubusercontent.com/OWASP/crAPI/main/deploy/docker/docker-compose.yml

I manually installed docker-compose version 1.26.2 and 1.27.0 and tried running both these commands:

docker-compose pull
docker-compose -f docker-compose.yml --compatibility up -d

For docker-compose version 1.26.2, output was:

For docker-compose version 1.27.0, output was:

Also, I see one commit regarding the interpolation issue in the 1.27.0 docker-compose release. Not very sure about it: Report which variable fails interpolation when they are mandatory

Documentation

Make sure that you have documented corresponding changes in this repository.

Checklist:

• [x] My changes generate no new warnings
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] Any dependent changes have been merged
• [x] I have documented any changes if required in the docs.