add setup script

.gitignore

@@ -1,2 +1 @@
 __pycache__/
-

README.md

@@ -1,21 +1,21 @@
 # wg-netns
 
-[wg-quick](https://git.zx2c4.com/wireguard-tools/about/src/man/wg-quick.8) with support for linux network namespaces.
-It's a simple python script that implements the steps described at [wireguard.com/netns](https://www.wireguard.com/netns/#ordinary-containerization).
+[wg-quick](https://git.zx2c4.com/wireguard-tools/about/src/man/wg-quick.8) with support for Linux network namespaces.
+A simple Python script that implements the steps described at [wireguard.com/netns](https://www.wireguard.com/netns/#ordinary-containerization).
 
 ## Setup
 
 Requirements:
 
-- Linux
 - Python 3.7 or newer
-- `ip` from `iproute2`
-- `wg` from `wireguard-tools`
+- `ip` from iproute2
+- `wg` from wireguard-tools
 
-Just download the script and make it executable.
+Installation:
 
 ~~~ bash
-mkdir -p ~/.local/bin/ && curl -o ~/.local/bin/wg-netns https://raw.githubusercontent.com/dadevel/wg-netns/master/wg-netns.py && chmod 0755 ~/.local/bin/wg-netns
+git clone --depth 1 https://github.com/dadevel/wg-netns.git
+sudo ./wg-netns/setup.sh
 ~~~
 
 ## Usage
@@ -144,4 +144,3 @@ socat tcp-listen:1234,reuseaddr,fork "exec:ip netns exec ns-example socat stdio
 # terminal 3, test access
 curl http://127.0.0.1:1234/hello.txt
 ~~~
-

setup.sh

@@ -0,0 +1,9 @@
+#!/bin/sh
+PS4='> '
+set -eux
+
+PREFIX="${PREFIX:-/usr/local}"
+
+cd "$(dirname "$0")"
+install -m 0755 -D ./wg-netns.py "$PREFIX/bin/wg-netns"
+install -m 0644 -D ./wg-netns@.service "$PREFIX/lib/systemd/system/wg-netns@.service"

wg-netns.py

@@ -211,4 +211,3 @@ if __name__ == '__main__':
             raise
         print(f'error: {e} ({e.__class__.__name__})', file=sys.stderr)
         sys.exit(2)
-

wg-netns@.service

@@ -9,9 +9,10 @@ Environment=WG_ENDPOINT_RESOLUTION_RETRIES=infinity
 Environment=DEBUG_LEVEL=1
 ExecStart=wg-netns up ./%i.json
 ExecStop=wg-netns down ./%i.json
-WorkingDirectory=%E/wg-netns
 RemainAfterExit=yes
 
+WorkingDirectory=%E/wg-netns
+ConfigurationDirectory=wg-netns
+
 [Install]
 WantedBy=multi-user.target
-