bind address can be configured by environment variables

main.go

@@ -6,6 +6,7 @@ import (
 	"html/template"
 	"log"
 	"net/http"
+	"os"
 	"strconv"
 )
 
@@ -85,5 +86,7 @@ func main() {
 		tmpl.Execute(w, status)
 	})
 
-	log.Fatal(http.ListenAndServe("127.0.0.1:8000", nil))
+	var address = fmt.Sprintf("%s:%s", os.Getenv("BIND"), os.Getenv("PORT"))
+
+	log.Fatal(http.ListenAndServe(address, nil))
 }