FROM debian:12 AS base
WORKDIR /usr/src/app
RUN apt-get update && \
    apt-get install -y curl unzip ca-certificates python3 python3-pip && \
    rm -rf /var/lib/apt/lists/*
# install BunJs
RUN curl -fsSL https://bun.com/install | bash
ENV PATH="/root/.bun/bin:$PATH"
# symlink python
RUN ln -s /usr/bin/python3 /usr/bin/python

# install dependencies into temp directory
# this will cache them and speed up future builds
FROM base AS install
RUN mkdir -p /temp/dev
COPY package.json bun.lock /temp/dev/
RUN cd /temp/dev && bun install --frozen-lockfile

# install with --production (exclude devDependencies)
RUN mkdir -p /temp/prod
COPY package.json bun.lock /temp/prod/
RUN cd /temp/prod && bun install --frozen-lockfile --production
# prepare python packages
RUN pip3 install -r requirements.txt

# copy node_modules from temp directory
# then copy all (non-ignored) project files into the image
FROM base AS prerelease
COPY --from=install /temp/dev/node_modules node_modules
COPY . .

# [optional] tests & build
ENV NODE_ENV=production

# copy production dependencies and source code into final image
FROM base AS release
COPY --from=install /temp/prod/node_modules node_modules
COPY --from=prerelease /usr/src/app/index.ts .
COPY --from=prerelease /usr/src/app/package.json .

# run the app
USER bun
ENTRYPOINT ["./entrypoint.sh"]