Some essential grammar fixes.

nginx/content.md

@@ -1,4 +1,4 @@
-# What is Nginx?
+# What is nginx?
 
 Nginx (pronounced "engine-x") is an open source reverse proxy server for HTTP, HTTPS, SMTP, POP3, and IMAP protocols, as well as a load balancer, HTTP cache, and a web server (origin server). The nginx project started with a strong focus on high concurrency, high performance and low memory usage. It is licensed under the 2-clause BSD-like license and it runs on Linux, BSD variants, Mac OS X, Solaris, AIX, HP-UX, as well as on other *nix flavors. It also has a proof of concept port for Microsoft Windows.
 
@@ -8,7 +8,7 @@ Nginx (pronounced "engine-x") is an open source reverse proxy server for HTTP, H
 
 # How to use this image
 
-## hosting some simple static content
+## Hosting some simple static content
 
 ```console
 $ docker run --name some-nginx -v /some/content:/usr/share/nginx/html:ro -d nginx
@@ -27,7 +27,7 @@ Place this file in the same directory as your directory of content ("static-html
 $ docker run --name some-nginx -d some-content-nginx
 ```
 
-## exposing the port
+## Exposing external port
 
 ```console
 $ docker run --name some-nginx -d -p 8080:80 some-content-nginx
@@ -35,15 +35,15 @@ $ docker run --name some-nginx -d -p 8080:80 some-content-nginx
 
 Then you can hit `http://localhost:8080` or `http://host-ip:8080` in your browser.
 
-## complex configuration
+## Complex configuration
 
 ```console
 $ docker run --name my-custom-nginx-container -v /host/path/nginx.conf:/etc/nginx/nginx.conf:ro -d nginx
 ```
 
-For information on the syntax of the Nginx configuration files, see [the official documentation](http://nginx.org/en/docs/) (specifically the [Beginner's Guide](http://nginx.org/en/docs/beginners_guide.html#conf_structure)).
+For information on the syntax of the nginx configuration files, see [the official documentation](http://nginx.org/en/docs/) (specifically the [Beginner's Guide](http://nginx.org/en/docs/beginners_guide.html#conf_structure)).
 
-If you wish to adapt the default configuration, use something like the following to copy it from a running Nginx container:
+If you wish to adapt the default configuration, use something like the following to copy it from a running nginx container:
 
 ```console
 $ docker run --name tmp-nginx-container -d nginx
@@ -51,24 +51,24 @@ $ docker cp tmp-nginx-container:/etc/nginx/nginx.conf /host/path/nginx.conf
 $ docker rm -f tmp-nginx-container
 ```
 
-As above, this can also be accomplished more cleanly using a simple `Dockerfile` (in `/host/path/`):
+This can also be accomplished more cleanly using a simple `Dockerfile` (in `/host/path/`):
 
 ```dockerfile
 FROM nginx
 COPY nginx.conf /etc/nginx/nginx.conf
 ```
 
-If you add a custom `CMD` in the Dockerfile, be sure to include `-g daemon off;` to `CMD` that Nginx stays in the foreground so that Docker can track the process properly (otherwise your container will stop immediately after starting)!
+If you add a custom `CMD` in the Dockerfile, be sure to include `-g daemon off;` in the `CMD` in order for nginx to stay in the foreground, so that Docker can track the process properly (otherwise your container will stop immediately after starting)!
 
-Then, build with `docker build -t custom-nginx .` and run:
+Then build the image with `docker build -t custom-nginx .` and run it as follows:
 
 ```console
 $ docker run --name my-custom-nginx-container -d custom-nginx
 ```
 
-### using environment variables in nginx configuration
+### Using environment variables in nginx configuration
 
-Out-of-the-box, Nginx doesn't support using environment variables inside most configuration blocks. But `envsubst` may be used as a workaround if you need to generate your nginx configuration dynamically before nginx starts.
+Out-of-the-box, nginx doesn't support environment variables inside most configuration blocks. But `envsubst` may be used as a workaround if you need to generate your nginx configuration dynamically before nginx starts.
 
 Here is an example using docker-compose.yml:
 
@@ -90,9 +90,9 @@ The `mysite.template` file may then contain variable references like this:
 `listen       ${NGINX_PORT};
 `
 
-## running nginx in debug mode
+## Running nginx in debug mode
 
-Images since version 1.9.8 come with `nginx-debug` binary that produces complete output when using higher verbosity log levels. It can be used with simple CMD substitution:
+Images since version 1.9.8 come with `nginx-debug` binary that produces verbose output when using higher log levels. It can be used with simple CMD substitution:
 
 ```console
 $ docker run --name my-nginx -v /host/path/nginx.conf:/etc/nginx/nginx.conf:ro -d nginx nginx-debug -g 'daemon off;'