Dockerfile.local

FROM ruby:3.3

# Create a directory for the app and set it as the working directory
WORKDIR /usr/src/app

# Create a user and group 'appuser' and set the ownership of the working directory
# https://docs.prismacloud.io/en/enterprise-edition/policy-reference/docker-policies/docker-policy-index/ensure-that-a-user-for-the-container-has-been-created
RUN groupadd -r appuser && useradd -r -g appuser appuser && \
    chown appuser:appuser /usr/src/app

# Copy the Gemfile into the working directory
COPY docs/Gemfile /usr/src/app

# Switch to the 'appuser'
USER appuser

# Update bundler to the latest version and install dependencies
RUN gem install bundler && bundle install

# Set the health check for the container
HEALTHCHECK --interval=1m --timeout=3s \
  CMD curl -f http://localhost:4000/ || exit 1

# Command to run the application
# on --host "0.0.0.0", see https://stackoverflow.com/a/51404865
CMD ["bundle", "exec", "jekyll", "serve", "--livereload", "--host", "0.0.0.0"]