Merge branch 'master' into AzureDeploymentDoc

packages/react-scripts/template/README.md

@@ -61,6 +61,7 @@ You can find the most recent version of this guide [here](https://github.com/fac
 - [Deployment](#deployment)
   - [Serving Apps with Client-Side Routing](#serving-apps-with-client-side-routing)
   - [Building for Relative Paths](#building-for-relative-paths)
+  - [Azure](#azure)
   - [Firebase](#firebase)
   - [GitHub Pages](#github-pages)
   - [Heroku](#heroku)
@@ -69,7 +70,7 @@ You can find the most recent version of this guide [here](https://github.com/fac
   - [Now](#now)
   - [S3 and CloudFront](#s3-and-cloudfront)
   - [Surge](#surge)
-  - [Azure](#azure)
+- [Advanced Configuration](#advanced-configuration)
 - [Troubleshooting](#troubleshooting)
   - [`npm start` doesn’t detect changes](#npm-start-doesnt-detect-changes)
   - [`npm test` hangs on macOS Sierra](#npm-test-hangs-on-macos-sierra)
@@ -1202,6 +1203,10 @@ If you are not using the HTML5 `pushState` history API or not using client-side
 
 This will make sure that all the asset paths are relative to `index.html`. You will then be able to move your app from `http://mywebsite.com` to `http://mywebsite.com/relativepath` or even `http://mywebsite.com/relative/path` without having to rebuild it.
 
+### Azure
+
+See [this](https://medium.com/@to_pe/deploying-create-react-app-on-microsoft-azure-c0f6686a4321) blog post on how to deploy your React app to [Microsoft Azure](https://azure.microsoft.com/).
+
 ### Firebase
 
 Install the Firebase CLI if you haven't already by running `npm install -g firebase-tools`. Sign up for a [Firebase account](https://console.firebase.google.com/) and create a new project. Run `firebase login` and login with your previous created Firebase account.
@@ -1409,9 +1414,18 @@ Install the Surge CLI if you haven't already by running `npm install -g surge`.
 
 Note that in order to support routers that use HTML5 `pushState` API, you may want to rename the `index.html` in your build folder to `200.html` before deploying to Surge. This [ensures that every URL falls back to that file](https://surge.sh/help/adding-a-200-page-for-client-side-routing).
 
-### Azure
+## Advanced Configuration
+
+You can adjust various development and production settings by setting environment variables in your shell or with [.env](#adding-development-environment-variables-in-env).
 
-See [this](https://medium.com/@to_pe/deploying-create-react-app-on-microsoft-azure-c0f6686a4321#.hmjzqlcck) blog post on how to deploy your React app to [Microsoft Azure](https://azure.microsoft.com/).
+Variable | Development | Production | Usage
+:--- | :---: | :---: | :---
+BROWSER | :white_check_mark: | :x: | By default, Create React App will open the default system browser, favoring Chrome on macOS. Specify a [browser](https://github.com/sindresorhus/opn#app) to override this behavior, or set it to `none` to disable it completely.
+HOST | :white_check_mark: | :x: | By default, the development web server binds to `localhost`. You may use this variable to specify a different host.
+PORT | :white_check_mark: | :x: | By default, the development web server will attempt to listen on port 3000 or prompt you to attempt the next available port. You may use this variable to specify a different port.
+HTTPS | :white_check_mark: | :x: | When set to `true`, Create React App will run the development server in `https` mode.
+PUBLIC_URL | :x: | :white_check_mark: | Create React App assumes your application is hosted at the serving web server's root or a subpath as specified in [`package.json` (`homepage`)](#building-for-relative-paths). Normally, Create React App ignores the hostname. You may use this variable to force assets to be referenced verbatim to the url you provide (hostname included). This may be particularly useful when using a CDN to host your application.
+CI | :large_orange_diamond: | :white_check_mark: | When set to `true`, Create React App treats warnings as failures in the build. It also makes the test runner non-watching. Most CIs set this flag by default.
 
 ## Troubleshooting