Feat: install.sh now honors OC_BASE_DIR and OC_HOST

[jnweiger]

Description

The quick install.sh has hardcoded paths.
This feature adds an option to set (both!) config and data to some specified parent directory as well as the hostname of the server.

Motivation and Context

Simplifies testing with different back end storages.
Locally and on remote servers

How Has This Been Tested?

Manually

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Technical debt
• Tests only (no source changes)

Checklist:

• Code changes
• Unit tests added
• Acceptance tests added
• Documentation added

[dragotin]

Thanks a lot :-)

[jnweiger]

@dragotin Added another variable OC_HOST, please re-review.

Background:
The addition of OC_HOST was actually motivated by a misleading error message in web.
When trying to access from remote, redirects were wrongly generated for e.g.
https://localhost:9200/themes/opencloud/theme.json but the error message shown in the web UI is a misleading

(We don't have a config.json in the config folder, but that is
a) harmless
b) and not the point. The thing that is actually missing is theme.json)

[jnweiger]

The check fails with

Run mheap/github-action-required-labels@v5
Error: Resource not accessible by integration

Is there anything I can do to push this forward?

[ScharfViktor]

Is there anything I can do to push this forward?

I don't think that we need run CI here. Approve -> merge