updated readme to include making a .env to run dockerfile

README.md

@@ -2,7 +2,19 @@
 Check out the examples folder for some examples. I will add more soon.
 
 ## Usage
-Set the following environment variables:
+### Configuration
+
+### Docker 
+- build the image: 
+```shell 
+docker build -t pastebinner .
+```
+- run the image:
+```shell
+docker run -it --env-file .env --network="host" pastebinner
+```
+
+Set the following environment variables and source them:
 
 ```
 pastebin_api_key