# https://aws.amazon.com/blogs/aws/new-for-aws-lambda-container-image-support/
ARG RUNTIME_VERSION="3.9"

# libexec is missing from >=3.17
ARG DISTRO_VERSION="3.16"

# Stage 1 - bundle base image + runtime
FROM python:${RUNTIME_VERSION}-alpine${DISTRO_VERSION} AS python-alpine

# Install GCC (Alpine uses musl but we compile and link dependencies with GCC)
RUN apk upgrade -U --available --no-cache && \
    apk add --no-cache \
    libstdc++


# Stage 2 - build function and dependencies
FROM python-alpine AS build-image
ARG TAG="latest"

# Install aws-lambda-cpp build dependencies
RUN apk upgrade -U --available --no-cache && \
    apk add --no-cache \
    build-base \
    libtool \
    autoconf \
    automake \
    make \
    cmake \
    libcurl \
    libffi-dev \
    libexecinfo-dev \
    openssl-dev
    # cargo

# Install requirements
COPY requirements.txt requirements.txt
RUN export MAKEFLAGS="-j$(nproc)" && \
    pip install -r requirements.txt --target /app

# Install our app
COPY app.py /app

# Ser version to our TAG
RUN sed -i -e "s/^__version__ =.*/__version__ = \"${TAG}\"/" /app/app.py

# Stage 3 - final runtime image
FROM python-alpine

WORKDIR /app
COPY --from=build-image /app /app

ENTRYPOINT [ "/usr/local/bin/python", "-m", "awslambdaric" ]
CMD [ "app.handler" ]

LABEL zero-downtime.net.image.maintainer="stefan@zero-downtime.net" \
      zero-downtime.net.image.license="AGPLv3"