Dockerfile for Demo Flask App deployed on Google App Engine

Dockerfile

FROM python:3.6
WORKDIR /usr/src/app

# To avoid invalidating docker's build
# cache everytime we are copying the app
# into the image, we will copy the 
# requirements.txt first and then in later
# step we will copy the entire app
COPY requirements.txt /usr/src/app/
RUN pip install -r requirements.txt

COPY . /usr/src/app/

ENTRYPOINT ["/usr/src/app/docker-entrypoint.sh"]