fix: simpler server CLI tool usage

docker/backend-entrypoint.sh

@@ -7,7 +7,7 @@ run_init_command() {
 	shift
 	if ! [ -f state/init-$stage ]; then
 		echo "Running initialization stage $stage"
-		echo " --> $@"
+		echo " --> $*"
 		if /app/entrypoint.sh tool "$*"
 		then
 			touch state/init-$stage
@@ -53,10 +53,12 @@ if [ "$cmd" == server ]; then
 elif [ "$cmd" == shell ]; then
 	exec /bin/sh
 elif [ "$cmd" == tool ]; then
+	tool="$1"
+	shift
 	exec /usr/bin/java \
 		-Dlog4j.configuration=log4j.properties \
 		-jar server.jar \
-		--run-tool "$@"
+		--run-tool "$tool" "$*"
 else
 	echo "Invalid command '$cmd'" >&2
 	exit 1