Class: Ufo::Docker::Dockerfile

Inherits:
Object
  • Object
show all
Defined in:
lib/ufo/docker/dockerfile.rb

Instance Method Summary collapse

Constructor Details

#initialize(full_image_name, options = {}) ⇒ Dockerfile

Returns a new instance of Dockerfile.



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# File 'lib/ufo/docker/dockerfile.rb', line 3

def initialize(full_image_name, options={})
  @full_image_name, @options = full_image_name, options
end

Instance Method Details

#current_dockerfile ⇒ Object 



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# File 'lib/ufo/docker/dockerfile.rb', line 11

def current_dockerfile
  @current_dockerfile ||= IO.read(dockerfile_path)
end

#dockerfile_path ⇒ Object 



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# File 'lib/ufo/docker/dockerfile.rb', line 15

def dockerfile_path
  "#{Ufo.root}/Dockerfile"
end

#new_dockerfile ⇒ Object 



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# File 'lib/ufo/docker/dockerfile.rb', line 19

def new_dockerfile
  lines = current_dockerfile.split("\n")
  # replace FROM line
  new_lines = lines.map do |line|
                if line =~ /^FROM /
                  "FROM #{@full_image_name}"
                else
                  line
                end
              end
  new_lines.join("\n") + "\n"
end

#update ⇒ Object 



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# File 'lib/ufo/docker/dockerfile.rb', line 7

def update
  write_new_dockerfile
end

#write_new_dockerfile ⇒ Object 



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# File 'lib/ufo/docker/dockerfile.rb', line 32

def write_new_dockerfile
  IO.write(dockerfile_path, new_dockerfile)
  unless @options[:mute]
    puts "The Dockerfile FROM statement has been updated with the latest base image:".color(:green)
    puts "  #{@full_image_name}".color(:green)
  end
end