Class: Dockerfile::Base

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

Overview

Provides shared behavior for dockerfile template classes.

Direct Known Subclasses

NodeJS, Ruby

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Base

Returns a new instance of Base.



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# File 'lib/dockerfile/base.rb', line 7

def initialize
  @template = []
end

Instance Attribute Details

#command ⇒ Object

Returns the value of attribute command.



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# File 'lib/dockerfile/base.rb', line 5

def command
  @command
end

#template ⇒ Object (readonly)

Returns the value of attribute template.



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# File 'lib/dockerfile/base.rb', line 4

def template
  @template
end

Instance Method Details

#render ⇒ Object 



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# File 'lib/dockerfile/base.rb', line 15

def render
  required_attributes.each do |attr|
    raise(MissingPropertyError, "Must populate #{attr}") if send(attr).nil?
  end

  unrendered_output = template.reduce("") do |out, (command, string)|
    out << command.to_s.upcase << " " << string << "\n"
  end

  ERB.new(unrendered_output).result(binding)
end

#required_attributes ⇒ Object 



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# File 'lib/dockerfile/base.rb', line 11

def required_attributes
  [:command]
end

#run(command, before: [:cmd]) ⇒ Object 



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# File 'lib/dockerfile/base.rb', line 27

def run(command, before: [:cmd])
  template.insert(do_before(before), [:run, command])
end