Refactor devcontainer setup and enhance R support

[DevNiall]

• Refactor the devcontainer setup to dynamically read the VS Code commit from the configuration file amd tag image with it.
• Update the GitHub Actions workflow to output commit information and clarify tagging for * VS Code versions in the README.
• Added missing R language information to the README,

[github-actions]

🔒 Trivy Security Scan Results

Status: ⚠️ Vulnerabilities found (see details in artifacts)
Vulnerabilities Found: 129 critical/high severity issues

⚠️ Action Required: Critical or high severity vulnerabilities detected.

Top 10 Critical/High Severity Vulnerabilities:

Type	Package	Vulnerability	Severity	Fixed Version
gobinary	stdlib	CVE-2024-24790	CRITICAL	1.21.11, 1.22.4
gobinary	stdlib	CVE-2024-24790	CRITICAL	1.21.11, 1.22.4
gobinary	stdlib	CVE-2024-24790	CRITICAL	1.21.11, 1.22.4
gobinary	stdlib	CVE-2024-24790	CRITICAL	1.21.11, 1.22.4
node-pkg	grunt	CVE-2020-7729	HIGH	1.3.0
node-pkg	grunt	CVE-2022-1537	HIGH	1.5.3
node-pkg	npm	CVE-2018-7408	HIGH	5.7.1
node-pkg	npm	CVE-2019-16775	HIGH	6.13.3
node-pkg	npm	CVE-2019-16776	HIGH	6.13.3
node-pkg	npm	CVE-2019-16777	HIGH	6.13.4

... and 4 more issues.

📊 Scan Details

• Image: ghcr.io/smartdatafoundry/devcontainer
• Scan Date: 2025-09-25 09:23:03 UTC
• Total Vulnerabilities: 129

Action Run: view run
Trivy Report: view report

[Copilot]

Pull Request Overview

This PR refactors the devcontainer setup to dynamically read VS Code commit information from the configuration file and implement intelligent tagging based on VS Code versions. The changes enhance documentation and improve build automation by adding support for VS Code-specific tagging and comprehensive R language documentation.

• Adds dynamic VS Code commit extraction from devcontainer.json configuration
• Implements new tagging strategy for VS Code version-specific builds
• Enhances README with comprehensive R language support documentation

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
README.md	Added R language support documentation and VS Code version tagging information
.github/workflows/build-devcontainer.yml	Implemented dynamic VS Code commit reading and enhanced tagging with commit information output

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[Copilot]

This command assumes a specific format for the VSCODE_COMMIT field in the JSON file. The cut -d " " -f 2 will fail if there are variations in spacing or if the field is formatted differently (e.g., \"VSCODE_COMMIT\":\"value\"). Consider using jq for more reliable JSON parsing: jq -r '.build.args.VSCODE_COMMIT // empty' .devcontainer/devcontainer.json

Suggested change

	VSCODE_COMMIT=$(grep 'VSCODE_COMMIT' .devcontainer/devcontainer.json | tr -d '"' | cut -d " " -f 2)
	VSCODE_COMMIT=$(jq -r '.build.args.VSCODE_COMMIT // empty' .devcontainer/devcontainer.json)

[Copilot]

There's an inconsistency in the commit SHA format description. Line 123 uses vscode-<commit-sha> while line 22 uses vscode-<vscode-commit-sha>. The format should be consistent throughout the documentation.