To ensure that C++20 is fully supported in TensorFlow,

Ubuntu image used in TF SIG Build Dockerfile upgraded from 20.04 to 22.04 (LTS).

PiperOrigin-RevId: 615889505

tensorflow/tools/tf_sig_build_dockerfiles/Dockerfile

@@ -1,5 +1,5 @@
 ################################################################################
-FROM ubuntu:20.04 as builder
+FROM ubuntu:22.04 as builder
 ################################################################################
 
 # Install devtoolset build dependencies
@@ -16,7 +16,7 @@ COPY builder.devtoolset/glibc2.17-inline.patch /glibc2.17-inline.patch
 RUN /build_devtoolset.sh devtoolset-9 /dt9
 
 ################################################################################
-FROM nvidia/cuda:12.3.1-base-ubuntu20.04 as devel
+FROM nvidia/cuda:12.3.1-base-ubuntu22.04 as devel
 ################################################################################
 COPY --from=builder /dt9 /dt9
 
@@ -60,6 +60,7 @@ RUN echo $CACHEBUSTER
 ARG PYTHON_VERSION
 COPY setup.python.sh /setup.python.sh
 COPY devel.requirements.txt /devel.requirements.txt
+RUN add-apt-repository ppa:deadsnakes/ppa && apt update -y
 RUN /setup.python.sh $PYTHON_VERSION devel.requirements.txt
 
 # Setup build and environment

tensorflow/tools/tf_sig_build_dockerfiles/devel.packages.txt

@@ -57,10 +57,9 @@ libtool
 libzmq3-dev
 mlocate
 moreutils
-openjdk-11-jdk
-openjdk-11-jre-headless
+openjdk-21-jdk
+openjdk-21-jre-headless
 pkg-config
-python3-dev
 python3-setuptools
 rsync
 software-properties-common

tensorflow/tools/tf_sig_build_dockerfiles/setup.sources.sh

@@ -44,10 +44,10 @@ cat >/etc/apt/sources.list.d/custom.list <<SOURCES
 deb https://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1804/x86_64 /
 
 # More Python versions: Deadsnakes
-deb http://ppa.launchpad.net/deadsnakes/ppa/ubuntu focal main
-deb-src http://ppa.launchpad.net/deadsnakes/ppa/ubuntu focal main
+deb http://ppa.launchpad.net/deadsnakes/ppa/ubuntu jammy main
+deb-src http://ppa.launchpad.net/deadsnakes/ppa/ubuntu jammy main
 
 # LLVM/Clang repository
-deb http://apt.llvm.org/focal/ llvm-toolchain-focal-17 main
-deb-src http://apt.llvm.org/focal/ llvm-toolchain-focal-17 main
+deb http://apt.llvm.org/jammy/ llvm-toolchain-jammy-17 main
+deb-src http://apt.llvm.org/jammy/ llvm-toolchain-jammy-17 main
 SOURCES