mentorenwahl/backend/Dockerfile

# Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
# Copyright (C) 2022  Dominic Grimm
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.

FROM docker.io/crystallang/crystal:1.7.3-alpine as crystal

FROM docker.io/tdewolff/minify:latest as minify

FROM crystal as micrate-deps
WORKDIR /usr/src/micrate
COPY ./micrate/shard.yml ./micrate/shard.lock ./
RUN shards install --production

FROM crystal as micrate-builder
WORKDIR /usr/src/micrate
COPY --from=micrate-deps /usr/src/micrate/shard.yml /usr/src/micrate/shard.lock ./
COPY --from=micrate-deps /usr/src/micrate/lib ./lib
COPY ./micrate/src ./src
RUN shards build --release --static --verbose -s -p -t

FROM minify as public
WORKDIR /usr/src/public
COPY ./public ./src
RUN minify -r -o ./dist ./src

FROM crystal as deps
WORKDIR /usr/src/mentorenwahl
COPY ./shard.yml ./shard.lock ./
RUN shards install --production

FROM minify as templates-html
WORKDIR /usr/src/templates/html
COPY ./templates/html .
RUN find . -name "*.html.ecr" -type f | xargs -I % sh -c 'mv "%" "$(basename -s .html.ecr "%").min.html"'
RUN minify . -r -o .
RUN find . -name "*.min.html" -type f | xargs -I % sh -c 'mv "%" "%.ecr"'

FROM crystal as builder
WORKDIR /usr/src/mentorenwahl
RUN apk add --no-cache pcre2-dev
RUN mkdir deps
COPY --from=deps /usr/src/mentorenwahl/shard.yml /usr/src/mentorenwahl/shard.lock ./
COPY --from=deps /usr/src/mentorenwahl/lib ./lib
ARG BUILD_ENV
COPY ./Makefile .
COPY ./LICENSE .
COPY ./db ./db
COPY --from=public /usr/src/public/dist ./public
COPY --from=templates-html /usr/src/templates/html ./templates/html
COPY ./src ./src
RUN if [ "${BUILD_ENV}" = "development" ]; then \
  make dev; \
  else \
  make; \
  fi
RUN if [ "${BUILD_ENV}" = "development" ]; then \
  ldd bin/api | tr -s '[:blank:]' '\n' | grep '^/' | \
  xargs -I % sh -c 'mkdir -p $(dirname deps%); cp % deps%;'; \
  ldd bin/worker | tr -s '[:blank:]' '\n' | grep '^/' | \
  xargs -I % sh -c 'mkdir -p $(dirname deps%); cp % deps%;'; \
  fi

FROM busybox as runner
LABEL maintainer="Dominic Grimm <dominic@dergrimm.net>" \
  org.opencontainers.image.description="Backend of Mentorenwahl" \
  org.opencontainers.image.licenses="GPL-3.0" \
  org.opencontainers.image.source="https://git.dergrimm.net/mentorenwahl/mentorenwahl" \
  org.opencontainers.image.url="https://git.dergrimm.net/mentorenwahl/mentorenwahl"
WORKDIR /usr/src/mentorenwahl
COPY --from=micrate-builder /usr/src/micrate/bin/micrate ./bin/micrate
COPY --from=builder /usr/src/mentorenwahl/db ./db
COPY --from=builder /usr/src/mentorenwahl/deps /
COPY --from=builder /usr/src/mentorenwahl/bin ./bin
EXPOSE 80