## Description
Requires: https://github.com/appsmithorg/appsmith/pull/40642
Adds an environment variable activating nss_wrapper when the
`securityPolicy.runAsUser` value is set so the UID can be set
dynamically. This avoids the `I have no name!` in the prompt when doing
a `kubectl exec` with that value set.
I am also introducing
[helm-unittest](https://github.com/helm-unittest/helm-unittest) for
ensuring that changes to our defaults are made explicit.
Fixes https://github.com/appsmithorg/appsmith/issues/38787
## Automation
/ok-to-test tags=""
### 🔍 Cypress test results
<!-- This is an auto-generated comment: Cypress test results -->
> [!WARNING]
> Tests have not run on the HEAD
d30d87ffc66c107f980a3b27464e97db0910dcbe yet
> <hr>Mon, 19 May 2025 18:59:10 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
- **New Features**
- Added automated unit testing for Helm charts, including snapshot and
security context tests.
- Introduced documentation for running and understanding Helm chart unit
tests.
- Added a GitHub Actions workflow to run Helm chart unit tests on pull
requests and manually.
- **Bug Fixes**
- Ensured the LD_PRELOAD environment variable is set when a specific
security context is configured in deployments.
- **Documentation**
- Updated Helm chart README to reference new testing documentation and
improve clarity.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
---------
Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>
Co-authored-by: Goutham Pratapa <goutham@appsmith.com>
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