Dockerfile

# Syntax=docker/dockerfile:1
# check=error=true

ARG RUBY_VERSION=3.3.4
FROM docker.io/library/ruby:$RUBY_VERSION-slim AS base

WORKDIR /rails

# Install base packages
RUN apt-get update -qq && \
    apt-get install --no-install-recommends -y curl libjemalloc2 libvips postgresql-client build-essential git && \
    rm -rf /var/lib/apt/lists /var/cache/apt/archives

# Set development environment
ENV RAILS_ENV="development" \
    BUNDLE_PATH="/usr/local/bundle" \
    BUNDLE_WITHOUT="production"

# Install gems
COPY Gemfile Gemfile.lock ./
RUN bundle install

# Copy application code
COPY . .

# Entrypoint prepares the database.
ENTRYPOINT ["/rails/bin/docker-entrypoint"]

# Start the server by default, this can be overwritten at runtime
EXPOSE 3000
CMD ["bin/setup"]