fix: Fix local PostgreSQL database backup failure (#11295)

Author: ssongliu

agent/utils/postgresql/client/local.go

@@ -134,11 +134,7 @@ func (r *Local) Backup(info BackupInfo) error {
 	defer outfile.Close()
 	global.LOG.Infof("start to pg_dump | gzip > %s.gzip", info.TargetDir+"/"+info.FileName)
 
-	ctx, cancel := context.WithTimeout(context.Background(), time.Duration(info.Timeout*uint(time.Second)))
-	defer cancel()
-	cmd := exec.CommandContext(
-		ctx,
-		"docker", "exec", "-i", r.ContainerName,
+	cmd := exec.Command("docker", "exec", "-i", r.ContainerName,
 		"sh", "-c",
 		fmt.Sprintf("PGPASSWORD=%s pg_dump -F c -U %s -d %s", r.Password, r.Username, info.Name),
 	)
@@ -161,9 +157,7 @@ func (r *Local) Recover(info RecoverInfo) error {
 	fi, _ := os.Open(info.SourceFile)
 	defer fi.Close()
 
-	ctx, cancel := context.WithTimeout(context.Background(), time.Duration(info.Timeout*uint(time.Second)))
-	defer cancel()
-	cmd := exec.CommandContext(ctx, "docker", "exec", "-i", r.ContainerName, "sh", "-c",
+	cmd := exec.Command("docker", "exec", "-i", r.ContainerName, "sh", "-c",
 		fmt.Sprintf("PGPASSWORD=%s pg_restore -F c -c --if-exists --no-owner -U %s -d %s", r.Password, r.Username, info.Name),
 	)
 	if strings.HasSuffix(info.SourceFile, ".gz") {