gistfile1.rb

# container A
template '/some/Dockerfile' do
  action :create
end

template '/some/file' do
  action :create
end

docker_image 'databass' do
  subscribes :build, 'template[/some/Dockerfile]'
  subscribes :build, 'template[/some/file]'
  action :build_if_missing
end

docker_container 'my_databass' do
  repo 'databass'
  action :run
  subscribes :redeploy, 'docker_image[databass]'
end

# container B
template '/someother/Dockerfile' do
  action :create
end

template '/someother/file' do
  action :create
end

docker_image 'web' do
  subscribes :build, 'template[/someother/Dockerfile]'
  subscribes :build, 'template[/someother/file]'
  action :build_if_missing
end

docker_container 'my_web' do
  repo 'web'
  link 'my_databass:my_databass'
  action :run
  subscribes :redeploy, 'docker_image[web]'
  subscribes :redeploy, 'docker_container[my_databass]'
end