feat(cmd): add --tty flag to run commands from a script

cli/app/cmd.go

@@ -47,6 +47,7 @@ Example:
 		internal.DebugFlag,
 		internal.LocalCmdFlag,
 		internal.RemoteUserFlag,
+		internal.TtyFlag,
 	},
 	BashComplete: autocomplete.AppNameComplete,
 	Before:       internal.SubCommandBefore,
@@ -236,6 +237,9 @@ func runCmdRemote(cl *dockerClient.Client, app config.App, abraSh, serviceName,
 
 	execCreateOpts.Cmd = cmd
 	execCreateOpts.Tty = true
+	if internal.Tty {
+		execCreateOpts.Tty = false
+	}
 
 	if err := container.RunExec(dcli, cl, targetContainer.ID, &execCreateOpts); err != nil {
 		return err