Issue dockerizing a ruby on rails project

I'm trying to dockerize a ruby project with a separate docker container for all services(web, Redis, and resque) when I initiated with code changes pointing to Redis and resque it is working as expected with the code change below:

config/initializers/resque_configs.rb

if USE_RESQUE  require 'resque/server'  #require 'resque/status_server'  #require 'jobs/generate_result_resque_job'  #require 'jobs/generate_result_priority_job'  #require 'jobs/background_mailer_job'  #require 'jobs/receipt_mailer_job'   Resque.redis = 'redis:6379:0'   Resque::Server.use(Rack::Auth::Basic) do |user, password|      password == "xxxxx"  && user == "xxxxx"  end

When change it as below setting the environment variable and try to browse the localhost getting the an error Cannot assign requested address - connect(2) for [::1]:6379:

if USE_RESQUE  require 'resque/server'  #require 'resque/status_server'  #require 'jobs/generate_result_resque_job'  #require 'jobs/generate_result_priority_job'  #require 'jobs/background_mailer_job'  #require 'jobs/receipt_mailer_job'  Resque.redis = "#{ENV['REDIS_HOST'] || 'localhost'}:6379:0"     Resque::Server.use(Rack::Auth::Basic) do |user, password|      password == "xxxxx"  && user == "xxxxx"  end

Errno::EADDRNOTAVAIL in Site#index

Showing /myapp/app/views/site/index.html.erb where line #57 raised:

Cannot assign requested address - connect(2) for [::1]:6379