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Dockerfile
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Dockerfile
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ARG RUBY_VERSION=3.2.0-slim
FROM ruby:$RUBY_VERSION
# Install packages needed to build gems
RUN apt-get update -qq && \
apt-get install --no-install-recommends -y \
build-essential \
git \
libpq-dev \
libvips \
postgresql-client \
pkg-config && \
apt-get clean && \
rm -rf /var/lib/apt/lists/* /usr/share/doc /usr/share/man
# Rails app lives here
WORKDIR /rails
# Set production environment
ENV RAILS_LOG_TO_STDOUT="1" \
RAILS_SERVE_STATIC_FILES="true" \
RAILS_ENV="production" \
BUNDLE_WITHOUT="development"
# Install application gems
COPY Gemfile Gemfile.lock ./
RUN bundle install
# Copy application code
COPY . .
# Precompile bootsnap code for faster boot times
RUN bundle exec bootsnap precompile --gemfile app/ lib/
# Precompiling assets for production without requiring secret RAILS_MASTER_KEY
RUN SECRET_KEY_BASE_DUMMY=1 bundle exec rails assets:precompile
# Entrypoint prepares the database.
ENTRYPOINT ["/rails/bin/docker-entrypoint"]
# Start the server by default, this can be overwritten at runtime
EXPOSE 3000
CMD ["./bin/rails", "server"]