How to Dockerize a project with Customised configuration

[snehaenola]

I have a project which uses pre existing apps namely frappe, erpnext, hrms and payments I have made customisation in those apps by adding doctypes, fields for the existing doctypes and API endpoints Now i want to Dockerize the whole project with these customisations added, there are lots of resources for dockerising custom apps, but didnt find any similar to my issue