Unable to deploy blockscout helm chart in the rootless mode

[scheibinger]

Hi 👋 ,

I tried deploy blockscout in kubernetes, with the root-less mode. That seems to be supported in general by the helm chart as it is possible to customize the securityContext via helm values for different containers. However there is an issue with init containers, like the one that runs DB migration.

I posted a PR to address the issue: blockscout/helm-charts#43 so all containers deployed via helm chart can work in the root-less mode.
I'd appreciate if you can review the PR and let me know if it make sense. 🙏