diff --git a/README.md b/README.md
index 8e3949f..1b14604 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 1. Update stack version in the `.env` file. For example, `STACK_VERSION=8.14.0-SNAPSHOT`
 1. In Kibana with a feature branch checked out, run `yarn build --skip-os-packages`.
-1. When the build is done, find the path to the Linux aarch64 archive shown in the many lines of logged text.
+1. When the build is done, find the path to the Linux aarch64 archive shown in the many lines of logged text.  It is currently being written to the `target` directory of the repo
 1. Copy the archive to the `kibana-dev` folder.
 1. Run `yarn build:ubuntu` to test kibana on regular ubuntu linux
 1. Run `yarn build:oracle` to test kibana on oracle
@@ -11,3 +11,5 @@
 1. Type `cd kibana-<version>-SNAPSHOT` then `bin/kibana` and watch the magic happen.
 
 Last tested with kibana-9.0.0-SNAPSHOT-linux-aarch64.tar.gz.
+
+Note that the ES data volumes are persistant, so you if you want a "fresh" ES, you'll want to delete the volumes before the `yarn build:*` step.
\ No newline at end of file
diff --git a/vm/rhel/Dockerfile b/vm/rhel/Dockerfile
index 47beb78..0b82242 100644
--- a/vm/rhel/Dockerfile
+++ b/vm/rhel/Dockerfile
@@ -1,5 +1,6 @@
 # Use offical red hat linux image as base image
-FROM redhat/ubi8:latest
+# FROM redhat/ubi8:latest
+FROM centos:7
 
 # Create a new user to avoid using root
 RUN useradd -ms /bin/bash developer
@@ -7,21 +8,28 @@ RUN useradd -ms /bin/bash developer
 # Set the working directory in the container to /home/developer
 WORKDIR /home/developer
 
+RUN sed -i -e 's!mirrorlist!#mirrorlist!g' /etc/yum.repos.d/CentOS-*
+RUN sed -i -e 's|#baseurl=http://mirror.centos.org|baseurl=http://vault.centos.org|g' /etc/yum.repos.d/CentOS-*
+
 # Install system dependencies
+
+# from https://www.reddit.com/r/CentOS/comments/1akkn92/dnf_on_centos_79/
+RUN yum-config-manager --enable extras
+
 RUN yum update -y && yum install -y \
     git curl vim wget \
     liberation-fonts-common fontconfig nss \
-    ttmkfdir rpm-build
+    ttmkfdir rpm-build dnf
 
 # install cabextract, required to install microsoft fonts (Arial, Times New Roman etc.) especially that liberation-fonts doesn't quite install these fonts
-RUN wget -P ~/packages https://dl.fedoraproject.org/pub/epel/8/Everything/aarch64/Packages/c/cabextract-1.9-7.el8.aarch64.rpm && \
-    rpm -Uvh ~/packages/cabextract-1.9-7.el8.aarch64.rpm && \
-    dnf install cabextract
+# RUN wget -P ~/packages https://dl.fedoraproject.org/pub/epel/8/Everything/aarch64/Packages/c/cabextract-1.9-7.el8.aarch64.rpm && \
+#     rpm -Uvh ~/packages/cabextract-1.9-7.el8.aarch64.rpm && \
+#     dnf install cabextract
 
 # configure web fonts
-RUN wget -P ~/packages http://corefonts.sourceforge.net/msttcorefonts-2.5-1.spec && \
-    rpmbuild -ba ~/packages/msttcorefonts-2.5-1.spec && \
-    yum localinstall --nogpgcheck -y /root/rpmbuild/RPMS/noarch/msttcorefonts-2.5-1.noarch.rpm
+# RUN wget -P ~/packages http://corefonts.sourceforge.net/msttcorefonts-2.5-1.spec && \
+#     rpmbuild -ba ~/packages/msttcorefonts-2.5-1.spec && \
+#     yum localinstall --nogpgcheck -y /root/rpmbuild/RPMS/noarch/msttcorefonts-2.5-1.noarch.rpm
 
 # install nodejs
 RUN mkdir /usr/local/nvm