Rewrite README to make it less error-prone, closes #1

README.md

@@ -2,24 +2,16 @@
 
 Recipe to build [`gaomd/ikev2-vpn-server`](https://registry.hub.docker.com/u/gaomd/ikev2-vpn-server/) Docker image.
 
-## Start the IKEv2 VPN Server
+## 1. Start the IKEv2 VPN Server
 
-    CONTAINER_ID=$(docker run -d --privileged \
-        -p 500:500/udp -p 4500:4500/udp \
-        gaomd/ikev2-vpn-server)
+    docker run -d --name ikev2-vpn-server --privileged -p 500:500/udp -p 4500:4500/udp gaomd/ikev2-vpn-server
 
-## Generate .mobileconfig file for iOS 8
+## 2. Generate a .mobileconfig file for iOS 8
 
-IKEv2 protocol requires iOS 8 or later, Mac OS X 10.10 (Yosemite) is not supported yet.
+*Replace `vpn1.yourdomain.tld` with your own domain name and make sure it resolves to you server's IP address.*
 
-    # Fill in you actual domain name,
-    # and make sure it resolves to you server's IP address.
-    export HOST="vpn1.example.com"
+    docker run -i -t --rm --volumes-from ikev2-vpn-server -e "HOST=vpn1.example.com" gaomd/ikev2-vpn-server generate-mobileconfig > ikev2-vpn.mobileconfig
 
-    docker run -i -t --rm --volumes-from ${CONTAINER_ID} \
-        -e "HOST=${HOST}" gaomd/ikev2-vpn-server \
-        generate-mobileconfig > "${HOST}.mobileconfig"
+This will generate an `ikev2-vpn.mobileconfig` file, transfer it your local computer via SSH tunnel (`scp`) or any other secure methods, then E-mail it to your iOS 8 devices via E-mail attachment.
 
-After you've generated the `*.mobileconfig` file, firstly, transfer it your local computer via SSH tunnel (`scp`) or any other secure methods.
-
-You may now open this file on your iOS 8 device (via E-mail attachment or AirDrop?, etc).
+*IKEv2 protocol requires iOS 8 or later, Mac OS X 10.10 (Yosemite) is not supported yet.*