Install Python in Ubuntu for RobotFramework

#!yml

# This is a sample build configuration for Python.
# Check our guides at https://confluence.atlassian.com/x/x4UWN for more examples.
# Only use spaces to indent your .yml configuration.
# -----
# You can specify a custom docker image from Docker Hub as your build environment.
image: ubuntu:16.04

pipelines:
  tags:                         # add the 'tags' section
    RobotTest-**:                   # specify the tag
      - step:                   # define the build pipeline for the tag
          script: # Modify the commands below to build your repository.
            - RUN apt-get update 
                 && apt-get install -y sudo 
                 && rm -rf /var/lib/apt/lists/* 
            - RUN add-apt-repository ppa:fkrull/deadsnakes 
            - RUN apt-get install python2.7.9 
            - RUN pip install robotframework-selenium2library requests
            - RUN PYTHONPATH=$PYTHONPATH:. pybot -d RobotFramework/Results --variable BROWSER:chrome --variable VERSION:latest --variable PLATFORM:MAC RobotFramework/Tests/ExpressionEngine.robot