Added volumes support #29

Signed-off-by: Maksim Chizhov <maksim.chizhov@gmail.com>

Author: marc-

README.md

@@ -34,7 +34,7 @@ machine 'wario' do
          "deep" => 'purple',
          "led" => 'zeppelin'
       }
-      
+
       # Ports can be one of two forms:
       # src_port (string or integer) is a pass-through, i.e 8022 or "9933"
       # src:dst (string) is a map from src to dst, i.e "8022:8023" maps 8022 externally to 8023 in the container
@@ -46,6 +46,17 @@ machine 'wario' do
       :ports => 1234
       :ports => "2345:6789"
 
+      # Volumes can be one of three forms:
+      # src_volume (string) is volume to add to container, i.e. creates new volume inside container at "/tmp"
+      # src:dst (string) mounts host's directory src to container's dst, i.e "/tmp:/tmp1" mounts host's directory /tmp to container's /tmp1
+      # src:dst:mode (string) mounts host's directory src to container's dst with the specified mount option, i.e "/:/rootfs:ro" mounts read-only host's root (/) folder to container's /rootfs
+
+      # Example (single):
+      :volumes => "/tmp"
+
+      # Example (multiple):
+      :volumes => ["/tmp:/tmp", "/:/rootfs:ro"]
+
       # if you need to keep stdin open (i.e docker run -i)
       # :keep_stdin_open => true
 

lib/chef/provisioning/docker_driver/docker_container_machine.rb

@@ -14,6 +14,7 @@ def initialize(machine_spec, transport, convergence_strategy, opts = {})
       @env = opts[:env]
       @command = opts[:command]
       @ports = opts[:ports]
+      @volumes = opts[:volumes]
       @keep_stdin_open = opts[:keep_stdin_open]
       @container_name = machine_spec.location['container_name']
       @transport = transport
@@ -27,7 +28,7 @@ def converge(action_handler)
       super action_handler
       if @command
         Chef::Log.debug("DockerContainerMachine converge complete, executing #{@command} in #{@container_name}")
-        @transport.execute(@command, :env => @env ,:detached => true, :read_only => true, :ports => @ports, :keep_stdin_open => @keep_stdin_open)
+        @transport.execute(@command, :env => @env ,:detached => true, :read_only => true, :ports => @ports, :volumes => @volumes, :keep_stdin_open => @keep_stdin_open)
       end
     end
 

lib/chef/provisioning/docker_driver/docker_transport.rb

@@ -81,6 +81,13 @@ def execute(command, options={})
         end
       end
 
+      if options[:volumes]
+        options[:volumes].each do |volume|
+          args << '-v'
+          args << "#{volume}"
+        end
+      end
+
       if options[:keep_stdin_open]
         args << '-i'
       end

lib/chef/provisioning/docker_driver/driver.rb

@@ -227,6 +227,7 @@ def machine_for(machine_spec, machine_options, base_image_name)
           :command => docker_options[:command],
           :env => docker_options[:env],
           :ports => [].push(docker_options[:ports]).flatten,
+          :volumes => [].push(docker_options[:volumes]).flatten.compact,
           :keep_stdin_open => docker_options[:keep_stdin_open]
         )
     end