Dockerfile for http://luckyframework.org deployment

Dockerfile

FROM crystallang/crystal:0.34.0 as builder

RUN apt-get update \
    && apt-get install -y --no-install-recommends build-essential  \
    apt-transport-https curl ca-certificates gnupg2 apt-utils

RUN curl -sL https://deb.nodesource.com/setup_12.x | bash - \
    && apt-get install -y nodejs

RUN curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add - \
    && echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list \
    && apt-get update \
    && DEBIAN_FRONTEND=noninteractive apt-get install -y yarn

ENV LUCKY_ENV production

WORKDIR /src

COPY shard.* ./
RUN shards install

# copy to different directory to have separate layer cache with shards
COPY yarn.lock package.json /tmp/
RUN cd /tmp && yarn install --frozen-lockfile && mv /tmp/node_modules /src/

COPY . .

# instead of "RUN yarn prod", that uses package.json to "npm run prod", do it without progress
RUN NODE_ENV=production yarn run webpack --hide-modules --color --config=node_modules/laravel-mix/setup/webpack.config.js

RUN crystal build --release src/start_server.cr -o ./server

FROM crystallang/crystal:0.34.0
WORKDIR /app

COPY --from=builder /src/server /app/
COPY --from=builder /src/public /app/public

ENV LUCKY_ENV=production

ENTRYPOINT ["./server"]