kiali: Kiali is not working with non-root user

Describe the bug Kiali is not working with non-root user.

Versions used Kiali: 1.23 Istio: 1.7.0 Kubernetes flavour and version: Kubernetes 1.18.0

To Reproduce Started Kiali as non-root user using below: -

        securityContext:
          runAsGroup: 1000
          runAsNonRoot: true
          runAsUser: 1000

Following are the start-up logs: -

I0917 13:21:35.281821       1 kiali.go:64] Kiali: Version: v1.23.0, Commit: 61d506bb658265552ab835c5e4183ccf8d86dcec
I0917 13:21:35.283900       1 kiali.go:155] Using authentication strategy [anonymous]
W0917 13:21:35.283914       1 kiali.go:157] Kiali auth strategy is configured for anonymous access - users will not be authenticated.
I0917 13:21:35.283955       1 kiali.go:85] Kiali: Console version: 1.23.0
I0917 13:21:35.283965       1 kiali.go:230] Updating base URL in index.html with [/kiali]
E0917 13:21:35.284008       1 kiali.go:256] File I/O error [open /opt/kiali/console/index.html: read-only file system]
I0917 13:21:35.284021       1 kiali.go:211] Generating env.js from config
E0917 13:21:35.284040       1 kiali.go:256] File I/O error [open /opt/kiali/console/env.js: read-only file system]
I0917 13:21:35.286095       1 server.go:67] Server endpoint will start at [:20001/kiali]
I0917 13:21:35.286109       1 server.go:68] Server endpoint will serve static content from [/opt/kiali/console]
I0917 13:21:35.286118       1 metrics_server.go:18] Starting Metrics Server on [:9090]

Expected behavior We should not see any File I/O error.