Added hint about MODULE=xxx when recompiling production assets.
Signed-off-by: Vincent Petry <vincent@nextcloud.com>
```
Then add the compiled files for committing.
-Please note that if you used `make build-js` or `make watch-js` before almost all files changed, so might need to clear the workspace first.
+To save some time, to only rebuild for a specific app, use the following and replace the module with the app name:
+```
+MODULE=user_status make build-js-production
+```
+
+Please note that if you used `make build-js` or `make watch-js` before, you'll notice that a lot of files were marked as changed, so might need to clear the workspace first.
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