lucky_crystal.dockerfile

FROM crystallang/crystal:0.27.2

WORKDIR /opt/src

# Install nodejs
COPY bin ./bin
RUN bin/nodesource_11.x
RUN apt-get update && apt-get install -y nodejs

# npm install
COPY package-lock.json package.json ./
RUN npm install

COPY shard.lock shard.yml ./
RUN ls -la
RUN shards install

COPY config config/
COPY db     db/
COPY public public/
COPY src    src/
COPY tasks  tasks/

COPY Procfile tasks.cr webpack.mix.js ./

EXPOSE 3001
EXPOSE 3002
EXPOSE 5000

ENV LUCKY_ENV development
ENV DATABASE_URL postgres://docker.for.mac.localhost/database

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

ENTRYPOINT ["/bin/bash"]
CMD ["-c", "bin/server"]

Thank you Robacarp!

Very nice! A few things I'd do in production:

• Change the command to crystal run --release src/server.cr. This will add a bunch of optimizations to speed things up. Don't do this in dev though. Compilation is WAY slower
• You'll of course need to change LUCKY_ENV to production

For dev I'd probably use lucky dev as the launch command. That will use a process manager to start the watch process and make sure assets are compiled live