Rakefile

# frozen_string_literal: true
namespace :docker do
  require 'securerandom'

  IMAGE = 'mwpastore/sinja-demo-app'
  NAME = SecureRandom.hex(6)
  PORT = 4567

  def port
    %x{
      docker inspect --format '{{ (index ( index .NetworkSettings.Ports "#{PORT}/tcp") 0).HostPort }}' #{NAME}
    }.chomp
  end

  task :build do
    sh "docker build --build-arg container_port=#{PORT} --no-cache -t #{IMAGE}:latest #{__dir__}"
  end

  task :test do
    sh "docker run --rm -d -P --name #{NAME} #{IMAGE}"
    sleep 5
    begin
      sh "curl -sf -H 'Accept: application/vnd.api+json' -I :#{port}/authors"
    ensure
      sh "docker stop #{NAME} >/dev/null || true"
    end
  end

  task push: [:build, :test] do
    sh "docker push #{IMAGE}:latest"
  end

  task :run do
    sh "docker run --rm -it -p #{PORT}:#{PORT} #{IMAGE}"
  end
end