## Description
In K8 deployments, sometimes, the environment variable seem to digress
from the contents of docker.env. Since we are writing to the docker.env,
also running the update super user migration using the file contents
itself.
Fixes #`Issue Number`
_or_
Fixes `Issue URL`
> [!WARNING]
> _If no issue exists, please create an issue first, and check with the
maintainers if the issue is valid._
## Automation
/test sanity
### 🔍 Cypress test results
<!-- This is an auto-generated comment: Cypress test results -->
> [!TIP]
> 🟢🟢🟢 All cypress tests have passed! 🎉🎉🎉
> Workflow run:
<https://github.com/appsmithorg/appsmith/actions/runs/14769222031>
> Commit: 72063ca47f41186cfc712c1950f1b6fc6aee5822
> <a
href="https://internal.appsmith.com/app/cypress-dashboard/rundetails-65890b3c81d7400d08fa9ee5?branch=master&workflowId=14769222031&attempt=1"
target="_blank">Cypress dashboard</a>.
> Tags: `@tag.Sanity`
> Spec:
> <hr>Thu, 01 May 2025 04:16:36 UTC
<!-- end of auto-generated comment: Cypress test results -->
## Communication
Should the DevRel and Marketing teams inform users about this change?
- [ ] Yes
- [ ] No
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
- **Bug Fixes**
- Improved reliability when updating super users by reading admin emails
from a specified environment file instead of directly from system
environment variables. If the file cannot be read, the process now logs
an error and continues without interruption.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
cb163bb6f5