message: Use CCF CI container in VSCode `.devcontainer.json`
diff: {
  "name": "Sample Development Environment for CCF",
  "context": "..",
  - "image": "mcr.microsoft.com/ccf/app/dev:lts-devcontainer",
  + "image": "ccfmsrc.azurecr.io/ccf/ci/sgx:oe-0.17.7-1",
  "runArgs": [],
  "extensions": ["ms-vscode.cpptools", "ms-python.python"]
  }
  