From 0b5d5635a94da61f0f16f107a91e9aff2c253bf8 Mon Sep 17 00:00:00 2001
From: Ross Kaffenberger <rosskaff@gmail.com>
Date: Fri, 29 Sep 2017 10:44:05 -0400
Subject: [PATCH] Update README.md for ENV vars with dev server

Replaces information about dev server CLI flags with new environment variables usage when running webpack-dev-server
---
 README.md | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/README.md b/README.md
index 04aaee70a..aa583f586 100644
--- a/README.md
+++ b/README.md
@@ -159,20 +159,18 @@ Once you start this development server, Webpacker will automatically start proxy
 webpack asset requests to this server. When you stop the server, it'll revert to
 on-demand compilation again.
 
-You can also pass CLI options supported by [webpack-dev-server](https://webpack.js.org/configuration/dev-server/). Please note that inline options will always take
-precedence over the ones already set in the configuration file.
+You can use environment variables as options supported by [webpack-dev-server](https://webpack.js.org/configuration/dev-server/) in the form `WEBPACKER_DEV_SERVER_<OPTION>`. Please note that these environment variables will always take precedence over the ones already set in the configuration file.
 
 ```bash
-./bin/webpack-dev-server --host example.com --inline true --hot false
+WEBPACKER_DEV_SERVER_HOST=example.com WEBPACKER_DEV_SERVER_INLINE=true WEBPACKER_DEV_SERVER_HOT=false ./bin/webpack-dev-server
 ```
 
 By default, webpack dev server listens on `localhost` in development for security
 but if you want your app to be available over local LAN IP or VM instance like vagrant
-you can pass an additional config option `--listen-host`
-when running `./bin/webpack-dev-server` binstub:
+you can set the `host` when running `./bin/webpack-dev-server` binstub:
 
 ```bash
-./bin/webpack-dev-server --listen-host 0.0.0.0
+WEBPACKER_DEV_SERVER_HOST=0.0.0.0 ./bin/webpack-dev-server
 ```
 
 **Note:** Don't forget to prefix `ruby` when running these binstubs on windows