fix: Fix PostgreSQL backup failure with $ character (#11252)

Author: ssongliu

agent/utils/postgresql/client/remote.go

@@ -132,7 +132,7 @@ func (r *Remote) Backup(info BackupInfo) error{
  }
 fileNameItem:=info.TargetDir+"/"+strings.TrimSuffix(info.FileName, ".gz")
 backupCommand:=exec.Command("bash", "-c",
-fmt.Sprintf("docker run --rm --net=host -i %s /bin/bash -c 'PGPASSWORD=\"%s\" pg_dump -h %s -p %d --no-owner -Fc -U %s %s' > %s",
+fmt.Sprintf("docker run --rm --net=host -i %s /bin/bash -c 'PGPASSWORD='\\''%s'\\'' pg_dump -h %s -p %d --no-owner -Fc -U %s %s' > %s",
 imageTag, r.Password, r.Address, r.Port, r.User, info.Name, fileNameItem))
 _=backupCommand.Run()
 b:=make([]byte, 5)
@@ -176,7 +176,7 @@ func (r *Remote) Recover(info RecoverInfo) error{
  }()
  }
 recoverCommand:=exec.Command("bash", "-c",
-fmt.Sprintf("docker run --rm --net=host -i %s /bin/bash -c 'PGPASSWORD=\"%s\" pg_restore -h %s -p %d --verbose --clean --no-privileges --no-owner -Fc -c --if-exists --no-owner -U %s -d %s --role=%s' < %s",
+fmt.Sprintf("docker run --rm --net=host -i %s /bin/bash -c 'PGPASSWORD='\\''%s'\\'' pg_restore -h %s -p %d --verbose --clean --no-privileges --no-owner -Fc -c --if-exists --no-owner -U %s -d %s --role=%s' < %s",
 imageTag, r.Password, r.Address, r.Port, r.User, info.Name, info.Username, fileName))
 pipe, _:=recoverCommand.StdoutPipe()
 stderrPipe, _:=recoverCommand.StderrPipe()