Add Tesseract to base

[bryanpaget]

Context

• Users want to do OCR on the Zone
• We don't have an OCR engine installed
• If we install the Tesseract-OCR engine (an ubuntu package) then users can install python and R tesseract libraries themselves and then do OCR.
• Users need to be educated on how to use the engine and which libraries to use, etc.

Todo

• Install tesseract-ocr (sudo apt install tesseract-ocr)
• Make example notebooks showing how to use the engine and the libraries
• Add here:

  zone-kubeflow-containers/images/base/Dockerfile

  Line 36 in e6c4113

  RUN apt-get update && \

Expected Result

• we have the tesseract-ocr engine installed and users can install Python and R packages to use the engine
• This keeps our base image small while enabling OCR

Reference

This epic is based on https://gitlab.k8s.cloud.statcan.ca/zone/zone-pulse/-/issues/21