Some improvements

1. Added simple architecture auto-detect feature
2. Improved README.md
3. Improved ngrok.yml config

Signed-off-by: David Eleazar <smartways897@gmail.com>

README.md

@@ -1,24 +1,9 @@
-# Installation
+## Installation
 
-Step 1: Place [`ngrok`](https://ngrok.com/download) in `/opt/ngrok/`.
+1. Clone this repository to the target machine (eg: Raspberry Pi)
+2. Get your `authtoken` from ngrok website
+3. Inspect and modify the configuration file `ngrok.yml`, by default this config will use _Asia Pacific_ region to serve both **HTTP** and **TCP** tunnels
+4. Run `sudo ./install.sh <your_authtoken>`, replace `<your_authtoken>` with the token you've obtained before from ngrok website.
+5. You're good to go!
 
-Step 2: Get `authtoken` from ngrok website, then add it to `/opt/ngrok/ngrok.yml`.
-
-Step 3. Modify your own configrations in `/opt/ngrok/ngrok.yml`.
-
-Step 4: Add `ngrok.service` to `/lib/systemd/system/`.
-
-Step 5: Start ngrok service by typing:
-
-```
-    systemctl enable ngrok.service
-    systemctl start ngrok.service
-```
-
-or just execute `install.sh` on Linux x64 platform.
-
-```
-    curl -O https://raw.githubusercontent.com/vincenthsu/systemd-ngrok/master/install.sh
-    chmod +x install.sh
-    sudo ./install.sh <your_authtoken>
-```
+_NB : this repository is forked from [vincenthsu/systemd-ngrok](https://github.com/vincenthsu/systemd-ngrok) with architecture auto-detect feature_

install.sh

@@ -1,5 +1,20 @@
 #!/usr/bin/env bash
 
+# determine system arch
+ARCH=
+if [ "$(uname -m)" == 'x86_64' ]
+then
+    ARCH=amd64
+elif [ "$(uname -m)" == 'aarch64' ]
+then
+    ARCH=arm64
+elif [ "$(uname -m)" == 'i386' ] || [ "$(uname -m)" == 'i686' ]
+then
+    ARCH=386
+else
+    ARCH=arm
+fi
+
 if [ ! $(which wget) ]; then
     echo 'Please install wget package'
     exit 1
@@ -26,7 +41,7 @@ if [ -z "$1" ]; then
 fi
 
 if [ ! -e ngrok.service ]; then
-    git clone --depth=1 https://github.com/vincenthsu/systemd-ngrok.git
+    git clone --depth=1 https://github.com/elzdave/systemd-ngrok.git
     cd systemd-ngrok
 fi
 cp ngrok.service /lib/systemd/system/
@@ -35,10 +50,14 @@ cp ngrok.yml /opt/ngrok
 sed -i "s/<add_your_token_here>/$1/g" /opt/ngrok/ngrok.yml
 
 cd /opt/ngrok
-wget https://bin.equinox.io/c/4VmDzA7iaHb/ngrok-stable-linux-amd64.zip
-unzip ngrok-stable-linux-amd64.zip
-rm ngrok-stable-linux-amd64.zip
+echo "Downloading ngrok for $ARCH . . ."
+wget https://bin.equinox.io/c/4VmDzA7iaHb/ngrok-stable-linux-$ARCH.zip
+unzip ngrok-stable-linux-$ARCH.zip
+rm ngrok-stable-linux-$ARCH.zip
 chmod +x ngrok
 
 systemctl enable ngrok.service
 systemctl start ngrok.service
+
+echo "Done installing ngrok"
+exit 0

ngrok.yml

@@ -1,16 +1,9 @@
 authtoken: <add_your_token_here>
-# region: ap
+region: ap
 tunnels:
+  web:
+    proto: http
+    addr: 80
   ssh:
     proto: tcp
     addr: 22
-#  myapp-http:
-#    addr: 80
-#    proto: http
-#    hostname: example.com
-#    auth: "user:secretpassword"
-#    bind_tls: false
-#  myapp-https:
-#    addr: 443
-#    proto: tls
-#    hostname: example.com