config: server host and port

config.yaml

@@ -10,3 +10,6 @@ template:
 meta:
   title: git good
   description: i think it's a skill issue
+server:
+  host: 127.0.0.1
+  port: 5555

config/config.go

@@ -19,6 +19,10 @@ type Config struct {
 		Title       string `yaml:"title"`
 		Description string `yaml:"description"`
 	} `yaml:"meta"`
+	Server struct {
+		Host string `yaml:"host"`
+		Port int `yaml:"port"`
+	} `yaml:"server"`
 }
 
 func Read(f string) (*Config, error) {

main.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"flag"
+	"fmt"
 	"log"
 	"net/http"
 
@@ -20,5 +21,7 @@ func main() {
 	}
 
 	mux := routes.Handlers(c)
-	log.Fatal(http.ListenAndServe(":5555", mux))
+	addr := fmt.Sprintf("%s:%d", c.Server.Host, c.Server.Port)
+	log.Println("starting server on", addr)
+	log.Fatal(http.ListenAndServe(addr, mux))
 }