multi-stage-build-good-dockerfile

multi-stage-build-good.Dockerfile

# GOOD

FROM python:3.9.1-slim as build

# Upgrade pip and then install build tools
RUN pip install --upgrade pip && \
    pip install --upgrade wheel setuptools wheel check-wheel-contents

### Consider the comments as commands
# Copy and install requirements - better caching
# Copy the application from Docker build context to WORKDIR
# Build the application, validate wheel contents and install the application

FROM python:3.9.1-slim as app

WORKDIR /myapp/
COPY --from=build /dist/ /myapp/

ENTRYPOINT ["app"]