switch to ubuntu 24.04

Jenkinsfile

@@ -53,7 +53,7 @@ pipeline
 	set -x
 	mpicxx -v
 	cmake --version
-	# Ubuntu 20.04 only ships cmake 3.16 not 3.17:
+	# Ubuntu 20.04 only ships cmake 3.16 not 3.23:
 	echo 'PACKAGES="once:cmake ${PACKAGES}"' > local.cfg
 	rm -rf $WORKSPACE/install
         ./candi.sh -j 8 -p $WORKSPACE/install
@@ -67,14 +67,14 @@ pipeline
       }
     }
 
-    stage ("Ubuntu-22.04")
+    stage ("Ubuntu-24.04")
     {
       options {timeout(time: 600, unit: 'MINUTES')}
       agent
       {
         dockerfile
         {
-          dir 'contrib/ubuntu2204'
+          dir 'contrib/ubuntu2404'
         }
       }
 
@@ -88,9 +88,9 @@ pipeline
 	rm -f local.cfg
 	rm -rf $WORKSPACE/install/
         ./candi.sh -j 8 -p $WORKSPACE/install
-        cp $WORKSPACE/install/tmp/build/deal.II-*/detailed.log detailed-ubuntu2204.log
+        cp $WORKSPACE/install/tmp/build/deal.II-*/detailed.log detailed-ubuntu2404.log
         '''
-	archiveArtifacts artifacts: 'detailed-ubuntu2204.log', fingerprint: true
+	archiveArtifacts artifacts: 'detailed-ubuntu2404.log', fingerprint: true
 
         sh '''#!/bin/bash
         cd $WORKSPACE/install/tmp/build/deal.II-* && make test

contrib/ubuntu2404/Dockerfile

@@ -0,0 +1,22 @@
+FROM ubuntu:24.04
+
+USER root
+
+RUN apt-get update && DEBIAN_FRONTEND="noninteractive" apt-get install -y \
+      lsb-release git subversion wget bc libgmp-dev \
+      build-essential autoconf automake cmake libtool gfortran python3 \
+      zlib1g-dev \
+      openmpi-bin openmpi-common libopenmpi-dev \
+      libblas3 libblas-dev liblapack3 liblapack-dev libsuitesparse-dev \
+    && rm -rf /var/lib/apt/lists/*
+
+ARG USER=bob
+RUN adduser --disabled-password --gecos '' $USER
+RUN adduser $USER sudo; echo '%sudo ALL=(ALL) NOPASSWD:ALL' >> /etc/sudoers
+
+RUN chown -R $USER:$USER /home/$USER
+USER $USER
+ENV HOME /home/$USER
+ENV USER $USER
+ENV OMPI_MCA_btl "^vader"
+WORKDIR $HOME