message: Use ci image in dev container
diff: {
  "name": "Sample Development Environment for CCF",
  "context": "..",
  - "dockerFile": "../docker/Dockerfile",
  + "image": "ccfciteam/ccf-ci-18.04-oe-0.8.0:latest",
  "runArgs": [],
  "extensions": ["ms-vscode.cpptools", "ms-python.python"]
  }
  