Dockerfile.production

ARG STACK_VERSION=20
ARG NODE_ENV=production
ARG RAILS_ENV=production

# ------------
# add application code to herokuish container
# build application (and install correct buildpacks from app.json along with it)
# generate slug as app.tar.gz
# ------------

# We need to specify linux/amd64 here because herokuish (and the heroku images further back) are not multi-platform
# So if we want to run this on a different architecture (eg silicon macs (linux/amd64/v8) and linux/arm64), 
# we need to specify it here to make sure it gets the right platform from the herokuish image
# we also need to specify the platform when we build the image too (if running on a non arm64 machine)
# https://github.com/heroku/heroku-buildpack-nodejs/issues/1268
# https://github.com/heroku/heroku-buildpack-ruby/issues/1457
# https://github.com/heroku/base-images/issues/194
FROM --platform=linux/amd64 gliderlabs/herokuish:latest-${STACK_VERSION} AS build
COPY . /tmp/app
ARG NODE_ENV
ARG RAILS_ENV
ENV NODE_ENV=${NODE_ENV}
ENV RAILS_ENV=${RAILS_ENV}
# tmp NODE_OPTIONS for now
ENV NODE_OPTIONS=--openssl-legacy-provider 
RUN (cat /tmp/app/app.json || echo '{}') | jq -r '.buildpacks[].url' > /tmp/app/.buildpacks && \
  (test -s /tmp/app/.buildpacks || rm /tmp/app/.buildpacks)
# RUN (cat /tmp/app/app.json || echo '{}') | jq -r '.environments.test.buildpacks[].url' > /tmp/app/.buildpacks && \
#   (test -s /tmp/app/.buildpacks || rm /tmp/app/.buildpacks)
RUN while IFS= read -r line; do herokuish buildpack install "$line"; done < /tmp/app/.buildpacks

RUN /build && \
  rm -Rf /tmp/* 
RUN herokuish slug generate && \
  herokuish slug export > /app.tar.gz

# ------------
# open herokuish container and import built slug from previous stage skipping build steps
# run the application
# ------------
FROM gliderlabs/herokuish:latest-${STACK_VERSION}

RUN apt-get update --error-on=any

# install postgres client
RUN apt-get install -y postgresql-client


ENV PORT 3000
ARG NODE_ENV
ARG RAILS_ENV
ENV NODE_ENV=${NODE_ENV}
ENV RAILS_ENV=${RAILS_ENV}
# tmp NODE_OPTIONS for now
ENV NODE_OPTIONS=--openssl-legacy-provider 
COPY --from=0 /etc /etc
RUN --mount=type=bind,from=build,source=/app.tar.gz,target=/app.tar.gz \
  herokuish slug import < /app.tar.gz
ENTRYPOINT [ "/start" ]
CMD [ "web" ]
# CMD ["tail", "-f", "/dev/null"]