Add security best practice to dockerfile

[akastav]

Update all dockerfile for all hydrosphere services with security best-practice recommendations:

• Use rootles access
• Use multistage build
• Update base images with minimum security issues

[] Manager
[] Gateway
[] Sonar
[] Auto-od
[] Stat
[] Visualizations
[] Rootcause
[] UI
[] SDK
[] Protos
[] Runtime (hydro-serving-python)

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.