Add sandboxes docs (#23596)

<!--Delete sections as needed -->

## Description

Add Sandboxes docs

## Related issues or tickets

ENGDOCS-3055

- [ ] Technical review
- [ ] Editorial review
- [ ] Product review

Signed-off-by: Usha Mandya <[email protected]>

Author: usha-mandya

content/manuals/ai/mcp-catalog-and-toolkit/catalog.md

@@ -34,6 +34,11 @@ compatibility.
 - Pull-based distribution using Docker infrastructure.
 - Tools provided by partners such as New Relic, Stripe, Grafana, and more.
 
+> [!NOTE]
+> E2B sandboxes now include direct access to the Docker MCP Catalog, giving developers
+> access to over 200 tools and services to seamlessly build and run AI agents. For
+> more information, see [E2B Sandboxes](sandboxes.md).
+
 ## How it works
 
 Each tool in the MCP Catalog is packaged as a Docker image with metadata.

content/manuals/ai/mcp-catalog-and-toolkit/faqs.md

@@ -4,7 +4,7 @@ linkTitle: Security FAQs
 description: Frequently asked questions related to MCP Catalog and Toolkit security
 keywords: MCP, Toolkit, MCP server, MCP client, security, faq
 tags: [FAQ]
-weight: 60
+weight: 70
 ---
 
 Docker MCP Catalog and Toolkit is a solution for securely building, sharing, and

content/manuals/ai/mcp-catalog-and-toolkit/hub-mcp.md

@@ -3,7 +3,7 @@ title: Docker Hub MCP server
 linkTitle: Hub MCP server
 description: The Docker Hub MCP Server makes Docker Hub image metadata accessible to LLMs for content discovery.
 keywords: Docker Hub MCP Server, Hub MCP server, Hub MCP
-weight: 50
+weight: 60
 ---
 
 The Docker Hub MCP Server is a Model Context Protocol (MCP) server that

content/manuals/ai/mcp-catalog-and-toolkit/mcp-gateway.md

@@ -24,6 +24,11 @@ the following benefits:
 - Enterprise observability: Built-in monitoring, logging, and filtering tools ensure
   full visibility and governance of AI tool activity.
 
+> [!NOTE]
+> E2B sandboxes now include direct access to the Docker MCP Catalog, giving developers
+> access to over 200 tools and services to seamlessly build and run AI agents. For
+> more information, see [E2B Sandboxes](sandboxes.md).
+
 ## Who is the MCP Gateway designed for?
 
 The MCP Gateway solves problems encountered by various groups: