Remove legacy DockerClient

lib/tasks/docker.rake

@@ -1,22 +0,0 @@
-# frozen_string_literal: true
-
-namespace :docker do
-  desc 'Remove all Docker containers and dangling Docker images (using the CLI)'
-  task clean_up: :environment do
-    `test -n "$(docker ps --all --quiet)" && docker rm --force $(docker ps --all --quiet)`
-    `test -n "docker images --filter dangling=true --quiet" && docker rmi $(docker images --filter dangling=true --quiet)`
-  end
-
-  desc 'List all installed Docker images'
-  task images: :environment do
-    puts DockerClient.image_tags
-  end
-
-  desc 'Pull all Docker images referenced by execution environments'
-  task pull: :environment do
-    ExecutionEnvironment.all.map(&:docker_image).each do |docker_image|
-      puts "Pulling #{docker_image}..."
-      DockerClient.pull(docker_image)
-    end
-  end
-end