Dockerfile

# syntax=docker/dockerfile:1
FROM ruby:3.2
RUN curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | gpg --dearmor -o /usr/share/keyrings/yarn-keyring.gpg && \
    echo "deb [signed-by=/usr/share/keyrings/yarn-keyring.gpg] https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list && \
    apt-get update -qq && apt-get install -y postgresql-client
WORKDIR /myapp
COPY . /myapp
RUN gem update --system
RUN bundle install

# Add a script to be executed every time the container starts.
COPY entrypoint.sh /usr/bin/
RUN chmod +x /usr/bin/entrypoint.sh
ENTRYPOINT ["entrypoint.sh"]
EXPOSE 3000

# Configure the main process to run when running the image
CMD ["rails", "server", "-b", "0.0.0.0"]