Dockerfile

FROM python:3.11-slim
ENV PYTHONUNBUFFERED 1
ENV PYTHONFAULTHANDLER=1

COPY . /app
WORKDIR /app

RUN apt-get update && \
	DEBIAN_FRONTEND=noninteractive apt-get -y install \
	build-essential \
	python3-dev \
	libxml2-dev \
	libxslt-dev \
	curl \
	gzip \
	sqlite3 && \
	apt-get clean

# NOTE: the below compiler flags are specifically targeted at the https://pypi.org/project/annoy/ library
# which is a dependency used for testing cosine similarity. The annoy library is optimized with C/C++ 
# and we've run into compatibility issues when building the extension in CI/CD (CodeBuild) and then 
# deploying (Fargate). The problem is that the build CPU includes AVX extensions (instructions) that 
# are not present in Fargate, which ultimately results in a "Fatal Python error: Illegal instruction".
# To that end, we are disabling the AVX1/AVX2 and AVX512 extensions.
RUN pip install --upgrade pip && \
	CFLAGS="-mno-avx -mno-avx512f" CXXFLAGS="-mno-avx -mno-avx512f" \
	pip install --no-cache-dir -r requirements.txt

RUN ./manage.py migrate \
    && ./manage.py import_clancy_sqldump
    
RUN ./manage.py build_annoy_forest

EXPOSE 8000
HEALTHCHECK --interval=30s --timeout=30s --start-period=10s --retries=3 CMD [ "curl -f http://127.0.0.1:8000/healthcheck" ]
ENTRYPOINT ["/app/docker-entrypoint.sh"]