More control over rdf graphs within docker container

[stuzart]

Environment variables to define the public and private graphs used with virtuoso when running within a docker container, including disabling the private graph. Also updated the example docker-compose for virtuoso to include these variables, and also added them to the standard seek container as they are needed for the sparql view. Since duplicated, moved these variables to a virtuoso.env file.

• relates to Sparql interface #2303

[Copilot]

Pull Request Overview

This PR introduces more flexible configuration for RDF graphs in Docker deployments by adding environment variables to control public and private graph URIs for Virtuoso. It consolidates virtuoso-related environment variables into a dedicated configuration file and updates the docker-compose setup to use these new variables.

• Replaced hardcoded RDF graph URIs with configurable environment variables
• Created a centralized virtuoso.env file to manage Virtuoso-specific configuration
• Updated docker-compose services to use the new environment file structure

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 3 comments.

File	Description
docker/virtuoso_settings.docker.yml	Replaced hardcoded graph URIs with environment variables
docker/virtuoso.env	New environment file containing Virtuoso configuration variables
docker-compose-virtuoso.yml	Updated services to use virtuoso.env file and pinned Virtuoso version

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