✨ Improve cache handling.

And make the devenv http server behave similar to a production
environment (related to cache handling).

frontend/scripts/build-app.sh

@@ -3,6 +3,8 @@
 source ~/.bashrc
 set -ex
 
+TAG=`git log -n 1 --pretty=format:%H -- ./`
+
 npm ci
 
 export NODE_ENV=production;
@@ -10,7 +12,7 @@ export NODE_ENV=production;
 # Clean the output directory
 npx gulp clean || exit 1;
 
-shadow-cljs release main
+shadow-cljs release main --config-merge "{:release-version \"${TAG}\"}"
 npx gulp build || exit 1;
 npx gulp dist:clean || exit 1;
 npx gulp dist:copy || exit 1;