slight changes to the start script

Website/launch.sh

@@ -55,11 +55,36 @@ if (!appDb.getUser(appUser)) {
 	});
 	print("created app user");
 } else {
-	print("app user already exists");
+	appDb.updateUser(appUser, {
+		pwd: appPassword,
+		roles: [{ role: "readWrite", db: appDatabase }],
+	});
+	print("updated app user");
 }
 '
 }
 
+wait_for_mongo_ready() {
+	local timeout_seconds=60
+	local interval=2
+	local elapsed=0
+
+	while [ $elapsed -lt $timeout_seconds ]; do
+		if "${DOCKER_CMD[@]}" compose --env-file "$SECRETS_FILE" exec -T mongodb mongosh --quiet \
+			--username "$MONGO_INITDB_ROOT_USERNAME" \
+			--password "$MONGO_INITDB_ROOT_PASSWORD" \
+			--authenticationDatabase admin \
+			--eval "db.adminCommand('ping').ok" >/dev/null 2>&1; then
+			return 0
+		fi
+		sleep $interval
+		elapsed=$((elapsed + interval))
+	done
+
+	echo "[FEHLER] MongoDB wurde nicht rechtzeitig erreichbar." >&2
+	return 1
+}
+
 resolve_docker_cmd() {
 	if docker info >/dev/null 2>&1; then
 		DOCKER_CMD=(docker)
@@ -113,6 +138,8 @@ resolve_docker_cmd
 
 compose build website
 compose up -d mongodb
+wait_for_mongo_ready
+ensure_mongo_app_user
 compose up -d --no-deps website
 
 # Wait for website to become healthy (simple HTTP check)