Multiple images in bitbucket pipeline

we can have separate image for each step in the bitbucket pipeline as shown below

pipelines:
  default:
    - step:
        name: Build and test
        **image: node:8.6**
        script:
          - npm install
          - npm test
          - npm run build
        artifacts:
          - dist/**
    - step:
        name: Deploy
        **image: python:3.5.1**
        trigger: manual
        script:
          - python deploy.py