diff --git a/Dockerfile.openj9 b/Dockerfile.openj9
index b7a5932..7c27805 100644
--- a/Dockerfile.openj9
+++ b/Dockerfile.openj9
@@ -2,8 +2,8 @@ FROM ubuntu:25.04 AS build
 
 # partly copied from mkdocker.sh
 # Copyright IBM Corp (Eclipse Public License 2.0)
-RUN apt update \
- && apt upgrade -y \
+RUN apt -qq update \
+ && apt -qq upgrade -y \
  && apt -qq install -y --no-install-recommends \
       ant ant-contrib autoconf build-essential ca-certificates cmake cpio curl file gcc-14 g++-14 gdb git \
       libasound2-dev libcups2-dev libdwarf-dev libelf-dev libexpat1-dev libffi-dev libfontconfig libfontconfig1-dev \
@@ -20,7 +20,7 @@ RUN mkdir /build/bootjdk /build/dist \
 
 RUN mkdir /build/jtreg \ 
      && wget --progress=dot:mega -O jtreg.zip https://builds.shipilev.net/jtreg/jtreg-7.5.1%2B1.zip \ 
-     && unzip jtreg.zip /build/jtreg \
+     && unzip jtreg.zip -d /build/jtreg \
      && rm -rf jtreg.zip
 
 ENV JT_HOME=/build/jtreg