provisioners/docker: setting to not auto assign name

plugins/provisioners/docker/config.rb

@@ -70,6 +70,7 @@ module VagrantPlugins
 
         @__containers.each do |name, params|
           params[:image] ||= name
+          params[:auto_assign_name] = true if !params.has_key?(:auto_assign_name)
           params[:daemonize] = true if !params.has_key?(:daemonize)
         end
       end

test/unit/plugins/provisioners/docker/config_test.rb

@@ -56,10 +56,12 @@ describe VagrantPlugins::Docker::Config do
       cs     = result.containers
       expect(cs.length).to eq(2)
       expect(cs["foo"]).to eq({
+        auto_assign_name: true,
         image: "foo",
         daemonize: false,
       })
       expect(cs["bar"]).to eq({
+        auto_assign_name: true,
         image: "bar",
         daemonize: true,
       })
@@ -97,6 +99,20 @@ describe VagrantPlugins::Docker::Config do
       subject.finalize!
       expect(subject.containers).to eql({
         "foo" => {
+          auto_assign_name: true,
+          daemonize: true,
+          image: "foo",
+        }
+      })
+    end
+
+    it "can not auto assign name" do
+      subject.run("foo", auto_assign_name: false)
+
+      subject.finalize!
+      expect(subject.containers).to eql({
+        "foo" => {
+          auto_assign_name: false,
           daemonize: true,
           image: "foo",
         }
@@ -109,6 +125,7 @@ describe VagrantPlugins::Docker::Config do
       subject.finalize!
       expect(subject.containers).to eql({
         "foo" => {
+          auto_assign_name: true,
           daemonize: false,
           image: "foo",
         }

website/docs/source/v2/provisioning/docker.html.md

@@ -132,6 +132,9 @@ to the name, the `run` method accepts a set of options, all optional:
 * `args` (string) - Extra arguments for [`docker run`](http://docs.docker.io/en/latest/commandline/cli/#run)
   on the command line. These are raw arguments that are passed directly to Docker.
 
+* `auto_assign_name` (boolean) - If true, the `-name` of the container will
+  be set to the first argument of the run. By default this is true.
+
 * `daemonize` (boolean) - If true, the "-d" flag is given to `docker run` to
   daemonize the containers. By default this is true.