feature: add a doc about how to install golang supernode

Signed-off-by: Starnop <[email protected]>

docs/en-us/userguide/install_server.md

@@ -46,7 +46,7 @@ Nginx|0.8+
 3. Build the Docker image.
 
     ```sh
-    make build-supernode
+    make build-supernode-java
     ```
 
 4. Obtain the latest Docker image ID of the SuperNode.
@@ -93,7 +93,7 @@ Nginx|0.8+
 
     **Tip:** The path of the Nginx configuration file is something like `src/supernode/src/main/docker/sources/nginx.conf`.
 
-    ```
+    ```conf
     server {
     listen 8001;
     location / {

docs/en-us/userguide/install_server_go.md

@@ -0,0 +1,135 @@
+# Installing Dragonfly Server
+
+This topic explains how to install the Dragonfly server with **Golang version**.
+
+**NOTE**: The Golang version supernode is **not ready for production usage**. However, you can use it more easily in your test environment.
+
+## Context
+
+Install the SuperNodes in one of the following ways:
+
+- Deploying with Docker: Recommended for quick local deployment and test.
+- Deploying with physical machines: Recommended for production usage.
+
+## Prerequisites
+
+When deploying with Docker, the following conditions must be met.
+
+Required Software | Version Limit
+---|---
+Git|1.9.1+
+Docker|1.12.0+
+
+When deploying with physical machines, the following conditions must be met.
+
+Required Software | Version Limit
+---|---
+Git|1.9.1+
+Golang|1.10.2+
+Nginx|0.8+
+
+## Procedure - When Deploying with Docker
+
+### Get Supernode image
+
+You can build your own supernode image.
+
+1. Obtain the source code of Dragonfly.
+
+    ```sh
+    git clone https://github.com/dragonflyoss/Dragonfly.git
+    ```
+
+2. Enter the project directory.
+
+    ```sh
+    cd Dragonfly
+    ```
+
+3. Build the Docker image.
+
+    ```sh
+    TAG="test"
+    make docker-build-supernode DF_VERSION=$TAG
+    ```
+
+4. Obtain the latest Docker image ID of the SuperNode.
+
+    ```sh
+    docker image ls|grep 'supernode' |awk '{print $3}' | head -n1
+    ```
+
+Or you can get it from [DockerHub](https://hub.docker.com/) directly.
+
+1. Obtain the latest Docker image ID of the SuperNode.
+
+    ```sh
+    docker pull supernode:0.4.0
+    ```
+
+### Start the SuperNode
+
+**NOTE**: Replace ${supernodeDockerImageId} with the ID obtained at the previous step.
+
+```sh
+docker run -d --name dfsupernode -p 8002:8002 -v /home/admin/supernode:/home/admin/supernode ${supernodeDockerImageId} --advertise-ip=127.0.0.1 --download-port=8001
+```
+
+## Procedure - When Deploying with Physical Machines
+
+1. Obtain the source code of Dragonfly.
+
+    ```sh
+    git clone https://github.com/dragonflyoss/Dragonfly.git
+    ```
+
+2. Enter the project directory.
+
+    ```sh
+    cd Dragonfly
+    ```
+
+3. Compile the source code.
+
+    ```sh
+    make build-supernode && make install
+    ```
+
+4. Start the SuperNode.
+
+    ```sh
+    supernode --home-dir=/home/admin/supernode --port=8002 --advertise-ip=127.0.0.1 --download-port=8001
+    ```
+
+5. Add the following configuration items to the Nginx configuration file.
+
+    ```conf
+    server {
+    listen 8001;
+    location / {
+      # Must be ${supernode.baseHome}/repo
+      root /home/admin/supernode/repo;
+     }
+    }
+    ```
+
+6. Start Nginx.
+
+    ```sh
+    sudo nginx
+    ```
+
+## After this Task
+
+- After the SuperNode is installed, run the following commands to verify if Nginx and **Supernode** are started, and if Port `8001` and `8002` are available.
+
+    ```sh
+    telnet 127.0.0.1 8001
+    telent 127.0.0.1 8002
+    ```
+
+- Install the Dragonfly client and test if the downloading works.
+
+    ```sh
+    dfget --url "http://${resourceUrl}" --output ./resource.png --node "127.0.0.1:8002"
+    ```