Update README

Author: yechs

README.md

@@ -1,18 +1,34 @@
 # Docker Nginx
 
-Dockerized Nginx with TLS 1.3 and Brotli support.
+Dockerized Nginx based on Alpine Linux with TLS 1.3 and Brotli support.
 
-Based on [nginxinc/docker-nginx](https://github.com/nginxinc/docker-nginx).
+Inspired by:
+ - [nginxinc/docker-nginx](https://github.com/nginxinc/docker-nginx)
+ - [google/ngx_brotli](https://github.com/google/ngx_brotli)
+ - [fholzer/docker-nginx-brotli](https://github.com/fholzer/docker-nginx-brotli)
 
-## Config
+## How to use this image
 
-To enable TLS 1.3, use:
+```shell
+docker pull hackinit/nginx-brotli
+docker run --name some-nginx -v /some/content:/usr/share/nginx/html:ro -d hackinit/nginx-brotli
+```
+
+For extra information, please refer to the [official Docker Hub Nginx documentation](https://hub.docker.com/_/nginx/), since this image builds upon it.
+
+In addition, you can look for Brotli configurations at the official repository [google/ngx_brotli](https://github.com/google/ngx_brotli#configuration-directives).
+
+
+## Sample config
+
+To enable TLS 1.3, add:
 
 ```nginx
 ssl_protocols TLSv1.2 TLSv1.3;
 ssl_ciphers [TLS13+AESGCM+AES128|TLS13+AESGCM+AES256|TLS13+CHACHA20]:[EECDH+ECDSA+AESGCM+AES128|EECDH+ECDSA+CHACHA20]:EECDH+ECDSA+AESGCM+AES256:EECDH+ECDSA+AES128+SHA:EECDH+ECDSA+AES256+SHA:[EECDH+aRSA+AESGCM+AES128|EECDH+aRSA+CHACHA20]:EECDH+aRSA+AESGCM+AES256:EECDH+aRSA+AES128+SHA:EECDH+aRSA+AES256+SHA:RSA+AES128+SHA:RSA+AES256+SHA:RSA+3DES;
 ```
-To enable Brotli, use this in `http` block:
+
+To enable Brotli, add this in `http` block:
 
 ```nginx
 brotli on;  
@@ -24,14 +40,12 @@ brotli_types *;
 
 ## Modification Details
 
-Compiled with OpenSSL 1.1.1b, which supports TLS 1.3.
-
 Module [ngx_brotli](https://github.com/google/ngx_brotli) has been added for Brotli support.
 
-## Build
+## Manually build from source
 
 ```bash
 git clone git://github.com/hackinit/docker-nginx.git
 cd docker-nginx
-docker build -t nginx:1.15.12-modified .
-```
+docker build -t nginx-brotli:latest .
+```