chore(Golang): Webkubectl is now built using Golang v1.16.

Author: liqiang-fit2cloud

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.15-alpine as gotty-build
+FROM golang:1.16-alpine as gotty-build
 
 ENV CGO_ENABLED=0
 ENV GOOS=linux

gotty/go.mod

@@ -1,6 +1,6 @@
 module github.com/KubeOperator/webkubectl/gotty
 
-go 1.15
+go 1.16
 
 require (
 	github.com/NYTimes/gziphandler v1.1.1

gotty/server/handlers.go

@@ -6,7 +6,7 @@ import (
 	"encoding/base64"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"log"
 	"net/http"
 	"net/url"
@@ -289,7 +289,7 @@ func (server *Server) handleKubeConfigApi(w http.ResponseWriter, r *http.Request
 		w.WriteHeader(405)
 		return
 	}
-	body, err := ioutil.ReadAll(r.Body)
+	body, err := io.ReadAll(r.Body)
 	if err != nil {
 		fmt.Printf("read body err, %v\n", err)
 		result.Message = "Invalid Request Body"
@@ -347,7 +347,7 @@ func (server *Server) handleKubeTokenApi(w http.ResponseWriter, r *http.Request)
 		w.WriteHeader(405)
 		return
 	}
-	body, err := ioutil.ReadAll(r.Body)
+	body, err := io.ReadAll(r.Body)
 	if err != nil {
 		fmt.Printf("read body err, %v\n", err)
 		result.Message = "Invalid Request Body"

gotty/server/server.go

@@ -5,7 +5,6 @@ import (
 	"crypto/tls"
 	"crypto/x509"
 	"html/template"
-	"io/ioutil"
 	"log"
 	"net"
 	"net/http"
@@ -48,7 +47,7 @@ func New(factory Factory, options *Options, redisOptions *RedisOptions) (*Server
 	}
 	if options.IndexFile != "" {
 		path := homedir.Expand(options.IndexFile)
-		indexData, err = ioutil.ReadFile(path)
+		indexData, err = os.ReadFile(path)
 		if err != nil {
 			return nil, errors.Wrapf(err, "failed to read custom index file at `%s`", path)
 		}
@@ -268,7 +267,7 @@ func (server *Server) setupHTTPServer(handler http.Handler) (*http.Server, error
 
 func (server *Server) tlsConfig() (*tls.Config, error) {
 	caFile := homedir.Expand(server.options.TLSCACrtFile)
-	caCert, err := ioutil.ReadFile(caFile)
+	caCert, err := os.ReadFile(caFile)
 	if err != nil {
 		return nil, errors.New("could not open CA crt file " + caFile)
 	}