Dockerfile.dev

# Dockerfile.dev
# syntax=docker/dockerfile:1

ARG RUBY_VERSION=3.3.0
FROM registry.docker.com/library/ruby:$RUBY_VERSION-slim AS base

WORKDIR /rails

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

# Install packages needed to build gems and development tools
RUN apt-get update -qq && \
    apt-get install --no-install-recommends -y build-essential git libpq-dev libvips pkg-config nodejs yarn

# Copy only the Gemfiles for installing gems
COPY Gemfile Gemfile.lock ./

# Use secret to access GitHub token for private repositories and install gems
RUN --mount=type=secret,id=GITHUB_TOKEN \
    GITHUB_TOKEN=$(cat /run/secrets/GITHUB_TOKEN) && \
    git config --global url."https://${GITHUB_TOKEN}@github.com/".insteadOf "https://github.com/" && \
    bundle install

# Copy the rest of the application code
COPY . .

# Precompile bootsnap code for faster boot times
RUN bundle exec bootsnap precompile app/ lib/

# Start the server by default
EXPOSE 3000
CMD ["./bin/rails", "server", "-b", "0.0.0.0"]