How to migrate existing content models during init job?

Data Services
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1

We have an application that is using cms with a few content models. These content models can be edited at runtime by some users.

When updating from 2025.06-ext2 to 2025.06-ext4 we need to update the content models in order for them to be rendered by content engine. We need to keep edits to content that were made at runtime earlier on during this process.

How can those models be migrated during a dataservices init job run?

2

The basic idea is to follow a 3-step process in a new migration step executed within dataservices init:

Since the content model migration is a nodejs application nodejs needs to be added to the dataservices init image as well.