client: Dockerfiles: ubuntu: add ROOT.cern support

client/Dockerfiles/finance/ubuntu/Dockerfile.root.in

@@ -21,9 +21,50 @@
 
 USER root
 
-RUN apt install -y botan libcrypto++-dev libsodium-dev googletest libbenchmark-dev
+# ROOT.cern dependencies (regardless of building or not)
+RUN apt install -y \
+  binutils \
+  cmake \
+  dpkg-dev \
+  g++ \
+  gcc \
+  libssl-dev \
+  libtbb-dev \
+  libx11-dev \
+  libxext-dev \
+  libxft-dev \
+  libxpm-dev \
+  python3
 
-# TODO: the .deb does not yet exist, install manually
+# ROOT.cern pre-compiled installation
-#RUN apt install -y root
+RUN apt install -y curl
+USER builder
+WORKDIR /usr/local/src
+RUN curl --location -O "https://root.cern/download/root_v6.32.02.Linux-ubuntu24.04-x86_64-gcc13.2.tar.gz"
+RUN tar xvzf "root_v6.32.02.Linux-ubuntu24.04-x86_64-gcc13.2.tar.gz"
+
+# ROOT.cern environment
+#
+# bash_aliases notes:
+#
+#  - *MUST* source thisroot.sh (from any directory)
+#
+#  - For `docker-finance version` command:
+#
+#    - To avoid thisroot.sh error, pushd/popd is required (per thisroot.sh)
+#
+#    - Although $ROOTSYS will be available during normal operation, it won't
+#      be avaialble to `docker-finance version`- so add binary to PATH here.
+USER @DOCKER_FINANCE_USER@
+RUN echo "pushd /usr/local/src/root/bin 1>/dev/null && source \"/usr/local/src/root/bin/thisroot.sh\" && popd 1>/dev/null" | tee -a ~/.bash_aliases
+RUN echo "export PATH=\"\$PATH::/usr/local/src/root/bin\"" | tee -a ~/.bash_aliases
+
+# docker-finance
+RUN apt install -y \
+  botan \
+  googletest \
+  libbenchmark-dev \
+  libcrypto++-dev \
+  libsodium-dev
 
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