Add note to sd card folder (#3635) to make people aware that the HTML folder only contains templates

* Create Readme.md

* Update Readme.md

* Update build.yaml

* Update Readme.md

.github/workflows/build.yaml

@@ -286,6 +286,7 @@ jobs:
         rm -rf ./sd-card/html
         rm -rf ./sd-card/demo
         cp -r ./html ./sd-card/ # Overwrite the Web UI with the preprocessed files
+        rm -f ./sd-card/Readme.md
         cp -r ./demo ./sd-card/
         cd sd-card; rm -rf html/param-tooltips; zip -r ../manual_setup/sd-card.zip *; cd ..
         cd ./manual_setup

sd-card/Readme.md

@@ -0,0 +1,5 @@
+# SD Card content
+This folder contains the files which are required to setup the SD card.
+
+❗ Do not directly copy this folder onto your SD card, **it will not work!** Instead, you can use any of the artifacts generaded in any of the Pipeline runs of the [Build-Pipeline](https://github.com/jomjol/AI-on-the-edge-device/actions/workflows/build.yaml).
+The files in the `html` folder here only serve as templates. The real `html` folder get generated using the Github actions.