MCP Server does not work in devcontainers

[nullfunc]

Repro:

1. IDE with MCP
2. open a project in a dev container
3. try some mcp commands

Expectation: Defang MCP server tools are available Actual: no mcp is set up

Within a dev container the mcp configuration is expected to live within the container but it is not installed.

Workaround: when running in a dev container, open terminal and install the mcp ( defang mcp setup --client xxxx )