Merge pull request peasead#20 from peasead/issue-19

Add Arch Linux steps

Author: peasead

README.md

@@ -52,15 +52,17 @@ Please follow the [Docker installation instructions](https://docs.docker.com/eng
 ```
 apt-get install jq git curl
 ```
-**Fedora:**  
-Please follow the [Docker installation instructions](https://docs.docker.com/engine/install/fedora/). Of specific note, you *must* install the `docker-compose-plugin`, which is different than `docker-compose`.
+**CentOS/Fedora:**  
+Please follow the [Docker installation instructions](https://docs.docker.com/engine/install/centos/). Of specific note, you *must* install the `docker-compose-plugin`, which is different than `docker-compose`.
 ```
 dnf install jq git curl
 ```
 
 **Other Linux distributions:**  
 Please follow the [Docker installation instructions](https://docs.docker.com/engine/install/). Of specific note, you *must* install the `docker-compose-plugin`, which is different than `docker-compose`.
 
+Arch Linux users should install `inetutils` and change the shell script from `hostname -I` to `hostname -i`.
+
 ## Usage
 
 This uses default creds of `elastic:changeme` and is intended purely for security research on a local Elastic stack. [Change the password in the `.env` file](https://github.com/peasead/elastic-container/blob/main/README.md#modifying).