sns-alert-hub/Dockerfile

# Stage 1 - bundle base image + runtime
FROM python:3.13-alpine3.20 AS python-alpine
ARG  ALPINE="v3.20"

# Install GCC (Alpine uses musl but we compile and link dependencies with GCC)
RUN echo "@kubezero https://cdn.zero-downtime.net/alpine/${ALPINE}/kubezero" >> /etc/apk/repositories && \
    wget -q -O /etc/apk/keys/stefan@zero-downtime.net-61bb6bfb.rsa.pub https://cdn.zero-downtime.net/alpine/stefan@zero-downtime.net-61bb6bfb.rsa.pub

RUN apk -U --no-cache upgrade && \
    apk --no-cache add \
    libstdc++


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

# Install aws-lambda-cpp build dependencies
RUN apk --no-cache add \
    build-base \
    libtool \
    autoconf \
    automake \
    make \
    cmake \
    libcurl \
    libffi-dev \
    openssl-dev \
    elfutils-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

# Set internal __version__ to our own container TAG
RUN sed -i -e "s/^__version__ =.*/__version__ = \"${TAG}\"/" /app/app.py

# Stage 3 - final runtime image
FROM python-alpine

RUN apk --no-cache add \
    zstd-libs

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"