Add file serving on not api urls

@@ -28,6 +28,7 @@ import (
 	"context"
 	"io"
 	"net/http"
+	"os"
 	"strings"
 
 	"gitlab.weird-web-workers.org/golang/logger"
@@ -80,6 +81,10 @@ func NewServer(addr string, log *logger.Logger) (server *Server) {
 	}
 
 	server.mux.Handle(
+		"/",
+		http.FileServer(http.Dir(os.Getenv("DOCUMENT_ROOT"))),
+	)
+	server.mux.Handle(
 		"/api/0.0.1/",
 		http.StripPrefix("/api/0.0.1/", &handler),
 	)