Update the Docker instructions in the README

dockerfiles/README.md

@@ -1,14 +1,16 @@
 ### Install Gogs With Docker
 
-Deploying gogs in [Docker](http://www.docker.io/) is just as easy as eating a pie, what you do is just open the `dockerfiles/build.sh` file, replace the configs:
+Deploying gogs using [Docker](http://www.docker.io/) is as easy as pie. Simple
+open the `/dockerfiles/build.sh` file and replace the initial configuration
+settings:
 
 ```
-DB_TYPE="YOUR_DB_TYPE"            # type of database, support 'mysql' and 'postgres'
-MEM_TYPE="YOUR_MEM_TYPE"          # type of memory database, support 'redis' and 'memcache'
-DB_PASSWORD="YOUR_DB_PASSWORD"    # The database password.
-DB_RUN_NAME="YOUR_DB_RUN_NAME"    # The --name option value when run the database image.
-MEM_RUN_NAME="YOUR_MEM_RUN_NAME"  # The --name option value when run the mem database image.
-HOST_PORT="YOUR_HOST_PORT"        # The port on host, which will be redirected to the port 3000 inside gogs container.
+DB_TYPE="YOUR_DB_TYPE"            # type of database, supports either 'mysql' or 'postgres'
+MEM_TYPE="YOUR_MEM_TYPE"          # type of memory database, supports either 'redis' or 'memcache'
+DB_PASSWORD="YOUR_DB_PASSWORD"    # The database password
+DB_RUN_NAME="YOUR_DB_RUN_NAME"    # The --name option value to use when running the database image
+MEM_RUN_NAME="YOUR_MEM_RUN_NAME"  # The --name option value to use when running the memory database image
+HOST_PORT="YOUR_HOST_PORT"        # The port to expose the app on (redirected to 3000 inside the gogs container)
 ```
 
 And run:
@@ -17,24 +19,38 @@ cd dockerfiles
 ./build.sh
 ```
 
-The build might take some time, just be paient. After it finishes, you will receive the message:
+The build will take some time, just be patient. After it finishes, it will
+display a message that looks like this (the content may be different, depending
+on your configuration options):
 
 ```
-Now we have the MySQL image(running) and gogs image, use the follow command to start gogs service( the content might be different, according to your own configs):
- docker run -i -t --link YOUR_DB_RUN_NAME:db  --link YOUR_MEM_RUN_NAME:mem  -p YOUR_HOST_PORT:3000 gogits/gogs 
+Now we have the MySQL image(running) and gogs image, use the follow command to start gogs service:
+docker run -i -t --link YOUR_DB_RUN_NAME:db --link YOUR_MEM_RUN_NAME:mem -p YOUR_HOST_PORT:3000 gogits/gogs
 ```
 
-Just follow the message, run:
+To run the container, just copy the above command:
 
 ```
- docker run -i -t --link YOUR_DB_RUN_NAME:db  --link YOUR_MEM_RUN_NAME:mem  -p YOUR_HOST_PORT:3000 gogits/gogs 
+docker run -i -t --link YOUR_DB_RUN_NAME:db --link YOUR_MEM_RUN_NAME:mem -p YOUR_HOST_PORT:3000 gogits/gogs
 ```
 
-Now we have gogs running! Open the browser and navigate to:
+Now gogs should be running! Open your browser and navigate to:
 
 ```
 http://YOUR_HOST_IP:YOUR_HOST_PORT
 ```
 
+During the installation procedure, use the following information:
+
+- The database type should be whichever `DB_TYPE` you selected above
+
+- The database host should be either `db:5432` or `db:3306` for PostgreSQL and
+  MySQL respectively
+
+- The `RUN_USER` should be whichever user you're running the container with.
+  Ideally that's `git`, but your individual configuration may vary
+
+- Everything else is configured like a normal gogs installation
+
 Let's 'gogs'!
 Ouya~