The build storefront script emits deprecation warnings. According to the respective discussion about the very same warnings in bin/console theme:compile etc. these are not critical and we can use the --no-debug switch to suppress them when running bin/console commands.
But this does not work for the other scripts, for example
bin/build-storefront.sh --no-debug
behaves exactly like the same command without a switch
bin/build-storefront.sh
in that it emits irritating irrelevant debug output.
Expected behaviour: clean console output like the psh.phar commands of older Shopware versions.