Improved Docker and cloud support

[anders-kiaer]

Closes #150.

• Remove dependency on webviz base image.
• Use same Python slim base image as user had when creating the portable app.
• Install same webviz framework version as user has locally.
• Install same plugin projects, with same version, as user has locally.
• Create Radix config automatically.

[HansKallekleiv]

Looks good!
I am not entirely sure that the radix configuration should be included in webviz-config as this is Equinor specific? Could instead the webviz-config-equinor be extended ? Something we can come back to.
Besides that only a minor comment to the documentation :)

We decided to increase scope of PR (due to recent improvements in Radix)

[asnyv]

Is it ideal to default these settings?
I guess we can override them after initial setup, but we've seen significantly higher memory usage on localhost than what has been defaulted here?
Also: I would think that such a spread between requested and maximum memory usage could lead to out of memory errors if you need the limit value, and you're a bit unlucky?

[anders-kiaer]

I think it is outside scope in this PR to intelligently find good values based on what the user has added to the app. But we should review the default values before merge 👍 https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/ and https://www.radix.equinor.com/docs/reference-radix-config/#resources give some information.