Dockerfile-flask

# alpine is the smallest image I've found
# that supports all required python packages
FROM alpine:3.12.0

# Install python packages:
RUN apk add --no-cache python3-dev 
RUN apk add --no-cache py3-pip 
RUN apk add --no-cache py3-regex
RUN apk add --no-cache py3-numpy
RUN apk add --no-cache py3-scipy
RUN apk add --no-cache py3-mysqlclient

# numpy installs to a different location than other packages:
ENV PYTHONPATH=/usr/lib/python3.8/site-packages

# Upgrade pip:
RUN pip3 install --upgrade pip
# Copy and install requirements with pip:
COPY ./requirements.txt /tmp/
RUN pip3 install -r /tmp/requirements.txt

# Install wordnet now in case of network
# issues when the container is running:
RUN mkdir -p /usr/nltk_data/corpora
WORKDIR /usr/nltk_data/corpora
RUN wget https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/wordnet.zip
RUN unzip -x wordnet.zip
RUN rm wordnet.zip

# Copy flask API and accompanying code to image:
RUN mkdir /cdli-commodity-viz
COPY ./code /cdli-commodity-viz/code

# Clean unnecessary files:
RUN rm -rf /cdli-commodity-viz/code/site*

# Extract compressed data:
WORKDIR /cdli-commodity-viz/code/data/
RUN tar xf commodities.tar.gz
RUN rm commodities.tar.gz

# Run flask in code directory
WORKDIR /cdli-commodity-viz/code/

# Expose a port to access the API:
EXPOSE 8088

# Run `python3 main.py`
ENTRYPOINT ["python3"]
CMD ["main.py"]