diff --git a/.SRCINFO b/.SRCINFO
new file mode 100644
index 0000000..c23b3cb
--- /dev/null
+++ b/.SRCINFO
@@ -0,0 +1,20 @@
+pkgbase = porkbun-dynamic-dns-python-git
+	pkgdesc = Our minimalist dynamic DNS client written in Python
+	pkgver = r14.e02d543
+	pkgrel = 1
+	url = https://github.com/Ta180m/porkbun-dynamic-dns-python
+	arch = any
+	license = MIT
+	depends = python
+	depends = python-requests
+	backup = etc/porkbun-ddns.json
+	source = porkbun-ddns.py
+	source = config.json.example
+	source = systemd.service
+	source = systemd.timer
+	sha256sums = SKIP
+	sha256sums = SKIP
+	sha256sums = SKIP
+	sha256sums = SKIP
+
+pkgname = porkbun-dynamic-dns-python-git
diff --git a/PKGBUILD b/PKGBUILD
new file mode 100644
index 0000000..7da3ed9
--- /dev/null
+++ b/PKGBUILD
@@ -0,0 +1,30 @@
+# Maintainer: Anthony Wang <ta180m@pm.me>
+_pkgname=porkbun-dynamic-dns-python
+pkgname=${_pkgname}-git
+pkgver=r14.e02d543
+pkgrel=1
+pkgdesc="Our minimalist dynamic DNS client written in Python"
+arch=(any)
+url="https://github.com/Ta180m/porkbun-dynamic-dns-python"
+license=('MIT')
+depends=('python' 'python-requests')
+backup=('etc/porkbun-ddns.json')
+source=("porkbun-ddns.py"
+        "config.json.example"
+        "systemd.service"
+        "systemd.timer")
+sha256sums=(SKIP
+            SKIP
+            SKIP
+            SKIP)
+
+pkgver() {
+  printf "r%s.%s" "$(git rev-list --count HEAD)" "$(git rev-parse --short HEAD)"
+}
+
+package() {
+  install -vDm755 porkbun-ddns.py "$pkgdir/usr/bin/porkbun-ddns"
+  install -vDm600 config.json.example "$pkgdir/etc/porkbun-ddns.json"
+  install -vDm644 systemd.service "$pkgdir/usr/lib/systemd/system/porkbun-ddns.service"
+  install -vDm644 systemd.timer "$pkgdir/usr/lib/systemd/system/porkbun-ddns.timer"
+}
diff --git a/config.json.example b/config.json.example
index 2936205..cde7977 100644
--- a/config.json.example
+++ b/config.json.example
@@ -1,4 +1,5 @@
-{ "endpoint":"https://api-ipv4.porkbun.com/api/json/v3",
+{
+  "domain": "",
   "apikey": "",
   "secretapikey": ""
-}
\ No newline at end of file
+}
diff --git a/porkbun-ddns.py b/porkbun-ddns.py
index 1401bd5..9db484f 100755
--- a/porkbun-ddns.py
+++ b/porkbun-ddns.py
@@ -61,7 +61,7 @@ def main(args):
         description=__doc__, formatter_class=argparse.RawDescriptionHelpFormatter
     )
     parser.add_argument("config", nargs=1, help="path to config file")
-    parser.add_argument("domain", nargs=1, help="domain to be updated")
+    parser.add_argument("domain", nargs="?", default="", help="domain to be updated")
     parser.add_argument("subdomain", nargs="?", default="", help="optional subdomain")
     parser.add_argument(
         "-i",
@@ -70,19 +70,30 @@ def main(args):
     )
     args = parser.parse_args()
 
-    args.domain, args.config = args.domain[0], args.config[0]
-    args.fqdn = "{}.{}".format(args.subdomain, args.domain).strip(".")
+    args.config = args.config[0]
 
     try:
         with sys.stdin if args.config == "-" else open(args.config) as file_:
             args.cfg = json.load(file_)
     except Exception as e:
         err(e)
+
+    # Load domain from JSON config file if not specified as an arg
+    if args.domain == "":
+        args.domain = args.cfg["domain"]
+    if args.subdomain == "" and "subdomain" in args.cfg:
+        args.subdomain = args.cfg["subdomain"]
+
+    args.fqdn = "{}.{}".format(args.subdomain, args.domain).strip(".")
+    
     required = ["secretapikey", "apikey"]
     if any(x not in args.cfg for x in required) or not isinstance(args.cfg, dict):
         err("all of the following are required in '{}': {}", args.config, required)
     args.cfg.setdefault("endpoint", "https://porkbun.com/api/json/v3/")
 
+    if not args.public_ip and "public_ip" in args.cfg:
+        args.public_ip = args.cfg["public_ip"]
+
     if not args.public_ip:
         args.public_ip = api(args, "/ping/")["yourIp"]
     args.public_ip = ipaddress.ip_address(args.public_ip)
diff --git a/systemd.service b/systemd.service
new file mode 100644
index 0000000..d4f2d3f
--- /dev/null
+++ b/systemd.service
@@ -0,0 +1,5 @@
+[Unit]
+Description=Detect external IP address and create/update a corresponding DNS record
+
+[Service]
+ExecStart=/usr/bin/porkbun-ddns /etc/porkbun-ddns.json
diff --git a/systemd.timer b/systemd.timer
new file mode 100644
index 0000000..c73aee3
--- /dev/null
+++ b/systemd.timer
@@ -0,0 +1,9 @@
+[Unit]
+Description=Detect external IP address and create/update a corresponding DNS record every 15 minutes
+
+[Timer]
+OnBootSec=15min
+OnUnitActiveSec=15min
+
+[Install]
+WantedBy=timers.target