minor: 构建镜像

docker/Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.20 AS builder
+FROM golang:1.21 AS builder
 WORKDIR /app
 COPY . .
 ARG GOODS=linux

docker/Dockerfile-with-nginx

@@ -1,4 +1,4 @@
-FROM golang:1.20 AS builder
+FROM golang:1.21 AS builder
 WORKDIR /app
 COPY . .
 ARG GOODS=linux