diff --git a/goolinux.json b/goolinux.json
index 2a5ed29..abf7716 100644
--- a/goolinux.json
+++ b/goolinux.json
@@ -1,6 +1,7 @@
 {
 
 "system": {
+	"base":		"alpine",
 	"packages": [
 		"tmux", "vim", "ripgrep",
 		"go"
diff --git a/main.go b/main.go
index fe51750..bb7f266 100644
--- a/main.go
+++ b/main.go
@@ -20,6 +20,7 @@ type Config struct {
 }
 
 type SystemConfig struct {
+	Base		string
 	Packages	[]string
 }
 
@@ -44,9 +45,12 @@ type ServiceConfig struct {
 func main() {
 	var err error
 	var config Config
+	var systemConfig Config
 
+	// Read user config file
 	file, err := os.ReadFile("goolinux.json")
 	if err != nil {
+		fmt.Println("Cannot read user config file")
 		fmt.Println(err)
 		return
 	}
@@ -57,6 +61,26 @@ func main() {
 		return
 	}
 
+	// Read system "base" config file if it exists
+	if config.System.Base != "" {
+		path := "services/" + config.System.Base + ".json"
+		file, err = os.ReadFile(path)
+		if err != nil {
+			fmt.Println("Cannot read system base config file")
+			fmt.Println(err)
+			return
+		}
+
+		err = hjson.Unmarshal(file, &systemConfig)
+		if err != nil {
+			fmt.Println(err)
+			return
+		}
+
+		// Merge base system config layer
+		mergo.Merge(&config, systemConfig, mergo.WithOverride)
+	}
+
 	// Parse services
 	for name, service := range config.Services {
 		var b strings.Builder
diff --git a/services/alpine.json b/services/alpine.json
new file mode 100644
index 0000000..194e329
--- /dev/null
+++ b/services/alpine.json
@@ -0,0 +1,13 @@
+{
+
+system: {
+	base:		"alpine",
+	packages:	[],
+}
+
+services: {
+	ssh:		{ enable: "true" },
+	firewall:	{ enable: "true" },
+}
+
+}
diff --git a/services/firewall/netavark.template b/services/firewall/netavark.template
index 7c521e1..1802ac3 100644
--- a/services/firewall/netavark.template
+++ b/services/firewall/netavark.template
@@ -1,2 +1,4 @@
+# https://fedoraproject.org/wiki/Changes/NetavarkNftablesDefault
+
 [network]
 firewall_driver="nftables"
diff --git a/services/proxy/caddy.template b/services/proxy/caddy.template
index cb936b1..f10357f 100644
--- a/services/proxy/caddy.template
+++ b/services/proxy/caddy.template
@@ -1,6 +1,8 @@
+# https://caddyserver.com/docs/caddyfile/options
 {
 }
 
+# https://caddyserver.com/docs/caddyfile/patterns
 {{range .Config.proxy}}
 {{.domain}} {
 	reverse_proxy localhost:{{.port}}