chore: Refactor Dockerfile for gem installation and precompilation

Author: teetangh

Dockerfile

@@ -1,62 +1,30 @@
-# syntax = docker/dockerfile:1
+# Use the official Ruby 3.0.0 image as the base image
+FROM ruby:3.3.0
 
-# Make sure RUBY_VERSION matches the Ruby version in .ruby-version and Gemfile
-ARG RUBY_VERSION=3.3.0
-FROM registry.docker.com/library/ruby:$RUBY_VERSION-slim as base
-
-# Rails app lives here
-WORKDIR /rails
-
-# Set production environment
-ENV RAILS_ENV="development" \
-    RAILS_LOG_TO_STDOUT="true" \
-    RAILS_SERVE_STATIC_FILES="true" \
-    RAILS_MAX_THREADS="5" \
-    RAILS_MASTER_KEY=""
-
-# Throw-away build stage to reduce size of final image
-FROM base as build
-
-# Install packages needed to build gems
+# Install essential Linux packages
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential git libvips pkg-config cmake
-
-# Install application gems
-COPY Gemfile Gemfile.lock ./
-RUN bundle install && \
-    rm -rf ~/.bundle/ "${BUNDLE_PATH}"/ruby/*/cache "${BUNDLE_PATH}"/ruby/*/bundler/gems/*/.git && \
-    bundle exec bootsnap precompile --gemfile
-
-# Copy application code
-COPY . .
+    apt-get install -y nodejs npm cmake && \
+    npm install -g yarn && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
-# Precompile bootsnap code for faster boot times
-RUN bundle exec bootsnap precompile app/ lib/
+# Set the working directory in the container
+WORKDIR /app
 
-# Precompiling assets for production without requiring secret RAILS_MASTER_KEY
-RUN SECRET_KEY_BASE_DUMMY=1 ./bin/rails assets:precompile
+# Install Rails gem with version 7.1
+RUN gem install rails -v '7.1'
 
+# Copy the Gemfile and Gemfile.lock into the container
+COPY Gemfile Gemfile.lock ./
 
-# Final stage for app image
-FROM base
-
-# Install packages needed for deployment
-RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y curl libsqlite3-0 libvips && \
-    rm -rf /var/lib/apt/lists /var/cache/apt/archives
-
-# Copy built artifacts: gems, application
-COPY --from=build /usr/local/bundle /usr/local/bundle
-COPY --from=build /rails /rails
-
-# Run and own only the runtime files as a non-root user for security
-RUN useradd rails --create-home --shell /bin/bash && \
-    chown -R rails:rails db log storage tmp
-USER rails:rails
+# Install project dependencies
+RUN bundle install
 
-# Entrypoint prepares the database.
-ENTRYPOINT ["/rails/bin/docker-entrypoint"]
+# Copy the rest of the application code into the container
+COPY . .
 
-# Start the server by default, this can be overwritten at runtime
+# Expose port 3000 to the Docker host
 EXPOSE 3000
-CMD ["./bin/rails", "server"]
+
+# Start the Rails server
+CMD ["rails", "server", "-b", "0.0.0.0"]