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Dockerfile

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+FROM ruby:3.4.5-slim-bookworm
+
+WORKDIR /app
+
+RUN apt-get update -qq && apt-get install --no-install-recommends -y \
+      build-essential curl libpq-dev libyaml-dev \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY Gemfile Gemfile.lock ./
+RUN bundle config set without "development test" && \
+    bundle install && \
+    rm -rf /usr/local/bundle/cache
+
+COPY . .
+RUN chmod +x bin/rails bin/rake
+
+ENV RAILS_ENV=production \
+    RAILS_LOG_TO_STDOUT=true \
+    RAILS_SERVE_STATIC_FILES=true \
+    PORT=3000
+
+EXPOSE 3000
+CMD ["bundle", "exec", "puma", "-C", "config/puma.rb"]