At a place I worked they checked the changed / added code[1] into a conventional version control with all our other code. There are quite a few adapters availa

At a place I worked they checked the changed / added code[1] into a conventional version control with all our other code. There are quite a few adapters available. The final image deployed to production was a starting generic image which the build team applied all the code from the version control. Worked just fine. If image-based approach is the deciding factor, it really shouldn't be. There are tools. 1) Smalltalks have a text output format for code chunks