diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index ae773b2..6b2f670 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -2,16 +2,18 @@
 name: Build
 
 on:
-  pull_request:
+#  pull_request:
   push:
     branches: [main, develop]
-    tags: ['*']
+    tags: ['v*']
   workflow_dispatch:
 
 env:
   REGISTRY: ghcr.io
   BASE_REPO: ubuntu
   BASE_TAG: "22.04"
+  ROOT_REPO: project8/luna_base_root
+  ROOT_TAG: "root_v6.28.06"
 
 jobs:
 
@@ -84,6 +86,8 @@ jobs:
           build-args: |
             img_repo=${{ env.BASE_REPO }}
             img_tag=${{ env.BASE_TAG }}
+            root_repo=${{ env.REGISTRY }}/${{ env.ROOT_REPO }}
+            root_tag=${{ env.ROOT_TAG }}
             common_tag=${{ steps.tag_name.outputs.tag }}
           tags: ${{ steps.docker_meta.outputs.tags }}
           platforms: ${{ matrix.push && 'linux/amd64,linux/arm64' || 'linux/amd64' }}
diff --git a/.github/workflows/build_root.yaml b/.github/workflows/build_root.yaml
new file mode 100644
index 0000000..6753281
--- /dev/null
+++ b/.github/workflows/build_root.yaml
@@ -0,0 +1,86 @@
+
+name: Build ROOT
+
+on:
+  pull_request:
+  push:
+    tags: ['root_v*']
+  workflow_dispatch:
+
+env:
+  REGISTRY: ghcr.io
+  BASE_REPO: ubuntu
+  BASE_TAG: "22.04"
+  ROOT_TAG: "root_v6.28.06"
+  NARG: 2
+
+jobs:
+
+  build-and-publish:
+
+    name: Build and push the docker images
+
+    strategy:
+      matrix:
+        build: [Dev]
+        include:
+          - push: true
+#          - push: ${{ github.event_name == 'push' && contains(github.ref, 'refs/tags/') }}
+          - build: Dev
+            tag-suffix: '-dev'
+
+    runs-on: ubuntu-latest
+    steps:
+    
+      - name: Check out the repo
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+          # Need to avoid a shallow clone (fetch-depth=1) so that the lookup of the tag works
+          fetch-depth: 0
+          
+      - name: Docker meta
+        id: docker_meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ github.repository }}
+          flavor: |
+            latest=auto
+            suffix=${{ matrix.tag-suffix }},onlatest=true
+          tags: |
+            type=semver,pattern={{raw}}
+            type=ref,event=branch
+            type=ref,event=pr
+          
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+        
+      - name: Set up Docker Buildx
+        id: setup_buildx
+        uses: docker/setup-buildx-action@v3
+        with:
+          buildkitd-flags: --debug
+
+      - name: Log in to the Container registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+    
+      - name: Build
+        id: build
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: Root/Dockerfile
+#          push: ${{ matrix.push }}
+          push: false
+          build-args: |
+            img_repo=${{ env.BASE_REPO }}
+            img_tag=${{ env.BASE_TAG }}
+            root_tag=${{ env.ROOT_TAG }}
+            narg=${{ env.NARG }}
+          tags: ${{ env.REGISTRY }}/project8/luna_base_root:${{ env.ROOT_TAG }}
+          platforms: linux/arm64
+#          platforms: ${{ matrix.push && 'linux/amd64,linux/arm64' || 'linux/amd64' }}
diff --git a/Dev/Dockerfile b/Dev/Dockerfile
index cfd8b83..3d45b89 100644
--- a/Dev/Dockerfile
+++ b/Dev/Dockerfile
@@ -1,6 +1,11 @@
 ARG img_repo=ubuntu
 ARG img_tag=22.04
 
+ARG root_repo=ghcr.io/project8/luna_base_root
+ARG root_tag=root_v6.28.06
+
+FROM ${root_repo}:${root_tag} as root_image
+
 FROM ${img_repo}:${img_tag} as base_image
 
 ARG common_tag=beta
@@ -30,7 +35,9 @@ COPY Scripts ${scripts_dir}
 # Install as many dependencies as possible using apt
 RUN ${scripts_dir}/install_packages.sh dev &&\
     ${scripts_dir}/install_python_packages.sh &&\
-    ${scripts_dir}/install_other_packages.sh &&\
+#    ${scripts_dir}/install_other_packages.sh &&\
     ${scripts_dir}/create_common_setup.sh &&\
     rm -rf ${scripts_dir} &&\
     /bin/true
+
+COPY --from=root_image /usr/local/root /usr/local/root
diff --git a/Prod/Dockerfile b/Prod/Dockerfile
index b108176..5f934d3 100644
--- a/Prod/Dockerfile
+++ b/Prod/Dockerfile
@@ -35,7 +35,7 @@ COPY Scripts ${scripts_dir}
 #   libhdf5-dev is removed because it was previously needed to install h5py, but isn't needed for running
 RUN ${scripts_dir}/install_packages.sh prod &&\
     ${scripts_dir}/install_python_packages.sh &&\
-    ${scripts_dir}/install_other_packages.sh &&\
+#    ${scripts_dir}/install_other_packages.sh &&\
     apt-get purge -y \
         wget \
         pipenv \
@@ -44,3 +44,5 @@ RUN ${scripts_dir}/install_packages.sh prod &&\
     ${scripts_dir}/create_common_setup.sh &&\
     rm -rf ${scripts_dir} &&\
     /bin/true
+
+COPY --from=root_image /usr/local/root /usr/local/root
diff --git a/Root/Dockerfile b/Root/Dockerfile
new file mode 100644
index 0000000..a44b9c5
--- /dev/null
+++ b/Root/Dockerfile
@@ -0,0 +1,33 @@
+ARG img_repo=ubuntu
+ARG img_tag=22.04
+
+FROM ${img_repo}:${img_tag} as base_image
+
+# TARGETARCH should get set automatically
+ARG TARGETARCH
+
+# These need to be filled in
+ARG root_tag
+ARG narg=2
+
+ARG cc_val=gcc
+ARG cxx_val=g++
+ENV CC=${cc_val}
+ENV CXX=${cxx_val}
+
+
+
+# Set bash as the default shell
+SHELL ["/bin/bash", "-c"]
+
+ENV CMAKE_LIBRARY_PATH=/usr/lib64
+
+# Copy all build scripts
+COPY Scripts ${scripts_dir}
+
+# Install as many dependencies as possible using apt
+RUN ${scripts_dir}/install_packages.sh dev root &&\
+    ${scripts_dir}/install_root.sh $root_tag $TARGETARCH $narg &&\
+    rm -rf ${scripts_dir} &&\
+    /bin/true
+
diff --git a/Scripts/install_packages.sh b/Scripts/install_packages.sh
index dc4e392..7fb59ad 100755
--- a/Scripts/install_packages.sh
+++ b/Scripts/install_packages.sh
@@ -23,9 +23,9 @@
 #   - vim: convenience utility
 #   - wget: downloading files (e.g. tarballs to install)
 #   - libgsl(-dev): ROOT, Kassiopeia
-#   - libopenblas(-dev): ???
-#   - liblapack(-dev): ???
-#   - libfreetype(-dev): ???
+#   - libopenblas(-dev): ROOT
+#   - liblapack(-dev): ROOT
+#   - libfreetype(-dev): ROOT
 #   - libx11(-dev): ROOT
 #   - libxpm(-dev): ROOT
 #   - libxft(-dev): ROOT
@@ -53,24 +53,33 @@ if [[ "$1" = "dev" ]]; then
     DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
         build-essential \
         dpkg-dev \
+        openssl \
         wget \
+        git \
         cmake \
         clang \
-        openssl \
-        vim \
-        python3 \
-        pipenv \
         libgsl-dev \
-        libopenblas-dev \
-        liblapack-dev \
-        libfreetype-dev \
         libx11-dev \
         libxpm-dev \
         libxft-dev \
         libxext-dev \
-        libpng-dev \
-        libjpeg-dev \
+        libopenblas-dev \
+        liblapack-dev \
+        libfreetype-dev \
+        python3 \
+        pipenv \
+        libssl-dev \
         libfftw3-dev \
+        libpng-dev \
+        libjpeg-dev 
+
+    if [[ "$2" = "root" ]]; then
+        echo "Exiting after only ROOT dependencies installed"
+        exit 0
+    fi
+
+    DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
+        vim \
         libboost-all-dev \
         libeigen3-dev \
         libhdf5-dev \
diff --git a/Scripts/install_root.sh b/Scripts/install_root.sh
new file mode 100755
index 0000000..2f71e3a
--- /dev/null
+++ b/Scripts/install_root.sh
@@ -0,0 +1,69 @@
+#! /bin/bash
+set -e  # exit on error
+
+#
+# This script installs the other (non-python, outside of apt) packages.
+# Usage:
+#   > ./install_other_packages.sh
+#
+# Current packages here:
+#   - ROOT: No longer available in the package manager (after Xenial)
+#           Required by Katydid, Locust, Kassiopeia
+#
+
+ROOT_TAG=$1
+echo "Installing ROOT: $ROOT_TAG"
+
+TARGETARCH=$2
+echo "Target arch: $TARGETARCH"
+
+NARG=$3
+
+if [[ "$TARGETARCH" = "amd64" ]]; then
+    echo "Installing pre-built binary"
+
+    ROOT_TARBALL="${ROOT_TAG}.Linux-ubuntu22-x86_64-gcc11.4.tar.gz"
+
+    cd /usr/local
+
+    # Install files and cleanup
+    URL="https://root.cern/download/$ROOT_TARBALL"
+    echo "getting this file: $URL"
+    wget -nv --no-check-certificate $URL #https://root.cern/download/$ROOT_TARBALL
+    tar -xzf $ROOT_TARBALL
+
+    # Cleanup
+    rm $ROOT_TARBALL
+else
+    echo "Installing from source"
+
+    # ROOT requires numpy
+    pip3 install --upgrade pip
+    pip3 install 'numpy>=1.14'
+
+    ROOT_TARBALL="${ROOT_TAG}.source.tar.gz"
+    ROOT_SOURCE=/tmp_source
+    ROOT_INSTALL=/usr/local/root
+
+    mkdir -p $ROOT_INSTALL
+
+    mkdir $ROOT_SOURCE
+    cd $ROOT_SOURCE
+
+    # Build
+    wget -nv --no-check-certificate https://root.cern/download/$ROOT_TARBALL
+    tar -xzf $ROOT_TARBALL
+    # Tags have the format root_vX.Y.Z, and the directories that are in the tarballs have the format root-X.Y.Z
+    ROOT_DIR=`echo "$ROOT_TAG" | sed -r 's/[_v]+/-/g'`
+    mkdir ${ROOT_DIR}/root_build
+    cd ${ROOT_DIR}/root_build
+    cmake -DCMAKE_INSTALL_PREFIX=$ROOT_INSTALL ..
+    cmake --build . -- install -j$NARG
+
+    # Cleanup
+    cd /
+    rm $ROOT_TARBALL
+    rm -r $ROOT_SOURCE
+fi
+
+echo "Target arch: $TARGETARCH"