Merge pull request #975 from unclejack/891-mark_command_as_optional

891 mark command as optional for docker run

container.go

@@ -76,7 +76,7 @@ type Config struct {
 }
 
 func ParseRun(args []string, capabilities *Capabilities) (*Config, *flag.FlagSet, error) {
-	cmd := Subcmd("run", "[OPTIONS] IMAGE COMMAND [ARG...]", "Run a command in a new container")
+	cmd := Subcmd("run", "[OPTIONS] IMAGE [COMMAND] [ARG...]", "Run a command in a new container")
 	if len(args) > 0 && args[0] != "--help" {
 		cmd.SetOutput(ioutil.Discard)
 	}

docs/sources/commandline/command/run.rst

@@ -8,7 +8,7 @@
 
 ::
 
-    Usage: docker run [OPTIONS] IMAGE COMMAND [ARG...]
+    Usage: docker run [OPTIONS] IMAGE [COMMAND] [ARG...]
 
     Run a command in a new container