providers/dock: pull image prior to starting

CHANGELOG.md

@@ -26,6 +26,7 @@ IMPROVEMENTS:
   - guests/photon: initial support [GH-5612]
   - guests/solaris,solaris11: support inserting generated key [GH-5182]
       [GH-5290]
+  - providers/docker: images are pulled prior to starting [GH-5249]
   - provisioners/chef: add capability for checking if Chef is installed on Windows [GH-5669]
   - provisioners/puppet: add support for Puppet 4 and configuration options [GH-5601]
   - provisioners/puppet: add support for `synced_folder_args` in apply [GH-5359]

Vagrantfile

@@ -4,65 +4,7 @@
 # Ruby, run unit tests, etc.
 
 Vagrant.configure("2") do |config|
-  config.vm.box = "hashicorp/precise64"
-  config.vm.hostname = "vagrant"
-  config.ssh.shell = "bash -c 'BASH_ENV=/etc/profile exec bash'"
-
-  ["vmware_fusion", "vmware_workstation", "virtualbox"].each do |provider|
-    config.vm.provider provider do |v, override|
-      v.memory = "1024"
-    end
-  end
-
-  config.vm.provision "shell", inline: $shell
-
-  config.push.define "www", strategy: "local-exec" do |push|
-    push.script = "scripts/website_push_www.sh"
-  end
-
-  config.push.define "docs", strategy: "local-exec" do |push|
-    push.script = "scripts/website_push_docs.sh"
+  config.vm.provider "docker" do |d|
+    d.image = "nginx"
   end
 end
-
-$shell = <<-CONTENTS
-export DEBIAN_FRONTEND=noninteractive
-MARKER_FILE="/usr/local/etc/vagrant_provision_marker"
-
-# Only provision once
-if [ -f "${MARKER_FILE}" ]; then
-  exit 0
-fi
-
-# Update apt
-apt-get update
-
-# Install basic dependencies
-apt-get install -y build-essential bsdtar curl
-
-# Import the mpapis public key to verify downloaded releases
-su -l -c 'curl -sSL https://rvm.io/mpapis.asc | gpg -q --import -' vagrant
-
-# Install RVM
-su -l -c 'curl -sL https://get.rvm.io | bash -s stable' vagrant
-
-# Add the vagrant user to the RVM group
-#usermod -a -G rvm vagrant
-
-# Install some Rubies
-su -l -c 'rvm install 2.1.1' vagrant
-su -l -c 'rvm --default use 2.1.1' vagrant
-
-# Output the Ruby version (for sanity)
-su -l -c 'ruby --version' vagrant
-
-# Install Git
-apt-get install -y git
-
-# Automatically move into the shared folder, but only add the command
-# if it's not already there.
-grep -q 'cd /vagrant' /home/vagrant/.bash_profile || echo 'cd /vagrant' >> /home/vagrant/.bash_profile
-
-# Touch the marker file so we don't do this again
-touch ${MARKER_FILE}
-CONTENTS

plugins/providers/docker/action.rb

@@ -258,6 +258,7 @@ module VagrantPlugins
                   b3.use HandleForwardedPortCollisions
                   b3.use SyncedFolders
                   b3.use ForwardedPorts
+                  b3.use Pull
                   b3.use Create
                   b3.use WaitForRunning
                 else
@@ -302,6 +303,7 @@ module VagrantPlugins
       autoload :IsBuild, action_root.join("is_build")
       autoload :IsHostMachineCreated, action_root.join("is_host_machine_created")
       autoload :Login, action_root.join("login")
+      autoload :Pull, action_root.join("pull")
       autoload :PrepareSSH, action_root.join("prepare_ssh")
       autoload :Stop, action_root.join("stop")
       autoload :PrepareNFSValidIds, action_root.join("prepare_nfs_valid_ids")

plugins/providers/docker/action/pull.rb

@@ -0,0 +1,26 @@
+module VagrantPlugins
+  module DockerProvider
+    module Action
+      class Pull
+        def initialize(app, env)
+          @app = app
+        end
+
+        def call(env)
+          @env             = env
+          @machine         = env[:machine]
+          @provider_config = @machine.provider_config
+          @driver          = @machine.provider.driver
+
+          image = @env[:create_image]
+          image ||= @provider_config.image
+
+          env[:ui].output(I18n.t("docker_provider.pull", image: image))
+          @driver.pull(image)
+
+          @app.call(env)
+        end
+      end
+    end
+  end
+end

plugins/providers/docker/driver.rb

@@ -102,6 +102,10 @@ module VagrantPlugins
         execute(*cmd.flatten)
       end
 
+      def pull(image)
+        execute('docker', 'pull', image)
+      end
+
       def start(cid)
         if !running?(cid)
           execute('docker', 'start', cid)

templates/locales/providers_docker.yml

@@ -43,6 +43,8 @@ en:
       Container not created. Skipping.
     not_docker_provider: |-
       Not backed by Docker provider. Skipping.
+    pull: |-
+      Pulling image '%{image}'...
     run_command_required: |-
       `vagrant docker-run` requires a command to execute. This command
       must be specified after a `--` in the command line. This is used

test/unit/plugins/providers/docker/driver_test.rb

@@ -84,6 +84,13 @@ describe VagrantPlugins::DockerProvider::Driver do
     end
   end
 
+  describe '#pull' do
+    it 'should pull images' do
+      subject.should_receive(:execute).with('docker', 'pull', 'foo')
+      subject.pull('foo')
+    end
+  end
+
   describe '#running?' do
     let(:result) { subject.running?(cid) }