• types of recommender system :
• popularity based : based on formula
• content based : based on similarty
• collobaratoy filtering:
• hybrid : mixture of all of the following

1. Copy files COPY . .

2. install dependieces RUN pip install --no-cache -r requirements.txt,

if we make changes in app file. step 1 will be chached invalidate, hence step 2 will be need to rebuild.

• In docker file, write command that doesn't changes with version first so that they won;t get cached invalidated.