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# Build compilation image
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FROM ruby:3.0.3-alpine as builder
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# The application runs from /app
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WORKDIR /app
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# Add the timezone as it's not configured by default in Alpine
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RUN apk add --update --no-cache tzdata && \
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cp /usr/share/zoneinfo/Europe/London /etc/localtime && \
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echo "Europe/London" > /etc/timezone
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# build-base: complication tools for bundle
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# yarn: node package manager
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# postgresql-dev: postgres driver and libraries
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RUN apk add --no-cache build-base yarn postgresql-dev
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# Install bundler to run bundle exec
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# This should be the same version as the Gemfile.lock
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RUN gem install bundler:2.2.3 --no-document
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# Install gems defined in Gemfile
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COPY .ruby-version Gemfile Gemfile.lock /app/
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RUN bundle config set without "development test"
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ARG BUNDLE_FLAGS="--jobs=4 --no-binstubs --no-cache"
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RUN bundle install ${BUNDLE_FLAGS}
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# Install node packages defined in package.json, including webpack
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COPY package.json yarn.lock /app/
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RUN yarn install --frozen-lockfile
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# Copy all files to /app (except what is defined in .dockerignore)
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COPY . /app/
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# Compile assets and run webpack. We set a dummy secret key.
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RUN RAILS_ENV=production bundle exec rails SECRET_KEY_BASE=pickasecuretoken assets:precompile
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# Cleanup to save space in the production image
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RUN rm -rf node_modules log tmp && \
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rm -rf /usr/local/bundle/cache && \
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rm -rf .env && \
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find /usr/local/bundle/gems -name "*.c" -delete && \
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find /usr/local/bundle/gems -name "*.h" -delete && \
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find /usr/local/bundle/gems -name "*.o" -delete && \
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find /usr/local/bundle/gems -name "*.html" -delete
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# Build runtime image
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FROM ruby:3.0.3-alpine as production
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# The application runs from /app
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WORKDIR /app
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# Add postgres driver library
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# Add the timezone as it's not configured by default in Alpine
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RUN apk add --update --no-cache libpq tzdata && \
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cp /usr/share/zoneinfo/Europe/London /etc/localtime && \
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echo "Europe/London" > /etc/timezone
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# Copy files generated in the builder image
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COPY --from=builder /app /app
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COPY --from=builder /usr/local/bundle/ /usr/local/bundle/
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ARG GIT_COMMIT_SHA="UNKNOWN"
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ENV GIT_COMMIT_SHA=${GIT_COMMIT_SHA}
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RUN echo ${GIT_COMMIT_SHA} > ./GIT_COMMIT_SHA
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ENV PORT=8080
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EXPOSE ${PORT}
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CMD RAILS_ENV=${RAILS_ENV} bundle exec rake db:migrate && bundle exec rails s -e ${RAILS_ENV} -p ${PORT} --binding=0.0.0.0
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