mentorenwahl/docker/backend/Dockerfile

FROM crystallang/crystal:1.3-alpine as deps
WORKDIR /app
RUN apk add curl --no-cache
COPY ./shard.yml ./shard.lock ./
RUN shards install --production

FROM crystallang/crystal:1.3-alpine as builder
ARG BUILD_ENV
WORKDIR /app/backend
COPY --from=deps /app/shard.yml /app/shard.lock ./
COPY --from=deps /app/lib ./lib
COPY ./Makefile ./Makefile
COPY ./LICENSE ./LICENSE
COPY ./src ./src
RUN if [ "${BUILD_ENV}" = "development" ]; then \
  make dev; \
  else \
  make; \
  fi

FROM alpine as runner
WORKDIR /app
RUN adduser -S backend -u 1001
COPY --from=builder /app/backend/bin ./bin
COPY ./db ./db
USER backend
EXPOSE 80
ENTRYPOINT [ "./bin/backend" ]
CMD [ "run" ]