mentorenwahl/docker/api/Dockerfile

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

FROM crystallang/crystal:latest-alpine as builder
ARG BUILD_ENV
WORKDIR /app
COPY --from=deps /app/shard.yml /app/shard.lock ./
COPY --from=deps /app/lib ./lib
COPY ./src ./src
RUN if [ "${BUILD_ENV}" = "development" ]; then \
  shards build --static --verbose -s -p -t; \
  else \
  shards build --static --release --no-debug --verbose -s -p -t; \
  fi

FROM ubuntu:latest as user
RUN useradd -u 10001 api

FROM scratch as runner
WORKDIR /app
COPY --from=user /etc/passwd /etc/passwd
COPY --from=builder /app/bin/api /bin/api
COPY --from=builder /app/bin/micrate /bin/micrate
COPY ./db ./db
USER api
EXPOSE 80
ENTRYPOINT [ "api" ]