diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..01c734c
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,6 @@
+FROM node
+COPY . /usr/src/app
+WORKDIR /usr/src/app
+EXPOSE 3000
+RUN npm install
+CMD npm start
\ No newline at end of file
diff --git a/README.md b/README.md
index 34836ac..5a5b5ff 100644
--- a/README.md
+++ b/README.md
@@ -3,3 +3,9 @@
 ```sh
 $ npm start
 ```
+
+or in docker
+
+```sh
+$ docker build -t gh-oauth-server . && docker run -p <your-port>:3000 -e CLIENT_SECRET=<your-client-secret> -d gh-oauth-server
+```
diff --git a/server.js b/server.js
index c321639..aa036f9 100644
--- a/server.js
+++ b/server.js
@@ -14,6 +14,10 @@ app.use(bodyParser.json())
 app.use(bodyParser.urlencoded({ extended: true }))
 
 app.post('*', upload.array(), (req, res) => {
+  let client_secret = process.env.CLIENT_SECRET
+  if (client_secret){
+    req.body.client_secret = client_secret
+  }
   request.post({
     url: 'https://github.com/login/oauth/access_token',
     form: req.body,