fix #2741: add staging environment via NODE_ENV

[PeterPanZH]

No description provided.

[codecov-io]

Codecov Report

Merging #2742 into dev will increase coverage by <.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##              dev    #2742      +/-   ##
==========================================
+ Coverage   99.91%   99.91%   +<.01%     
==========================================
  Files          23       23              
  Lines        1211     1213       +2     
==========================================
+ Hits         1210     1212       +2     
  Misses          1        1

Impacted Files	Coverage Δ
lib/builder/webpack/server.config.js	100% <ø> (ø)	⬆️
lib/builder/webpack/client.config.js	100% <ø> (ø)	⬆️
lib/core/renderer.js	100% <0%> (ø)	⬆️

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[Atinux]

Thanks @PeterPanZH

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.