I have a few apps that I've migrated to railway from heroku and overall everything is working great.

I'd like to create Dockerfiles that are specific to my app(s), both in order to keep version compatibility and to optimize build times. Is there a way to start with the Dockerfiles that are generated by the railway build process, or do I need to start from scratch? (Ie. is there a way I can download the Dockerfile generated during the build process? Or create it locally?)

Many thanks