Add utility script and env for running the CI scripts under Docker

This commit adds the scripts and envs that set up a Docker container named "jax". It is used in internal JAX CI jobs that handle building and publishing JAX artifacts to PyPI and/or GCS.

While GitHub action workflows use the same Docker images, they do not run `run_docker_container.sh` script as they leverage built-in containerization features to run jobs within a container.

PiperOrigin-RevId: 706793601

Author: nitins17

ci/envs/docker.env

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+# Copyright 2024 The JAX Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ==============================================================================
+# This file contains all the docker specifc envs that are needed by the
+# ci/utilities/run_docker_container.sh script.
+
+os=$(uname -s | awk '{print tolower($0)}')
+arch=$(uname -m)
+
+# The path to the JAX git repository.
+export JAXCI_JAX_GIT_DIR=$(pwd)
+
+export JAXCI_DOCKER_WORK_DIR="/jax"
+export JAXCI_DOCKER_ARGS=""
+
+# TODO(b/384533574): Replace latest tagged images with sha or release specific
+# tags when we make the new release jobs as default.
+# Linux x86 image for building JAX artifacts, running Pytests CPU/TPU tests, and
+# Bazel tests
+if [[ $os == "linux" ]] && [[ $arch == "x86_64" ]]; then
+  export JAXCI_DOCKER_IMAGE="us-central1-docker.pkg.dev/tensorflow-sigs/tensorflow/ml-build:latest"
+fi
+
+# Linux Aarch64 image for building JAX artifacts, running Pytests CPU tests, and
+# Bazel tests
+if [[ $os == "linux" ]] && [[ $arch == "aarch64" ]]; then
+  export JAXCI_DOCKER_IMAGE="us-central1-docker.pkg.dev/tensorflow-sigs/tensorflow/ml-build-arm64:latest"
+fi
+
+# Windows image for building JAX artifacts, running Pytests CPU tests, and Bazel
+# tests
+if [[ $os =~ "msys_nt" ]]; then
+  export JAXCI_DOCKER_IMAGE="us-central1-docker.pkg.dev/tensorflow-sigs/tensorflow/tf-test-windows:latest"
+fi

ci/utilities/run_docker_container.sh

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+#!/bin/bash
+# Copyright 2024 The JAX Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ==============================================================================
+# Sets up a Docker container for JAX CI.
+#
+# This script creates and starts a Docker container named "jax" for internal
+# JAX CI jobs.
+#
+# Note: While GitHub action workflows use the same Docker images, they do not
+# run this script as they leverage built-in containerization features to run
+# jobs within a container.
+# Usage:
+#     ./ci/utilities/run_docker_container.sh
+#     docker exec jax <build-script>
+#     E.g: docker exec jax ./ci/build_artifacts.sh jaxlib
+#
+# -e: abort script if one command fails
+# -u: error if undefined variable used
+# -x: log all commands
+# -o history: record shell history
+# -o allexport: export all functions and variables to be available to subscripts
+set -exu -o history -o allexport
+
+source ./ci/envs/docker.env
+
+# Keep the existing "jax" container if it's already present.
+if ! docker container inspect jax >/dev/null 2>&1 ; then
+  # Simple retry logic for docker-pull errors. Sleeps if a pull fails.
+  # Pulling an already-pulled container image will finish instantly, so
+  # repeating the command costs nothing.
+  docker pull "$JAXCI_DOCKER_IMAGE" || sleep 15
+  docker pull "$JAXCI_DOCKER_IMAGE"
+
+  # Docker on Windows doesn't support the `host` networking mode, and so
+  # port-forwarding is required for the container to detect it's running on GCE.
+  # This is needed for RBE configs to work.
+  if [[ "$(uname -s)" =~ "MSYS_NT" ]]; then
+    export IP_ADDR=$(powershell -command "(Get-NetIPAddress -AddressFamily IPv4 -InterfaceAlias 'vEthernet (nat)').IPAddress")
+    netsh interface portproxy add v4tov4 listenaddress=$IP_ADDR listenport=80 connectaddress=169.254.169.254 connectport=80
+    JAXCI_DOCKER_ARGS="$JAXCI_DOCKER_ARGS -e GCE_METADATA_HOST=$IP_ADDR"
+  fi
+
+  # Create a temporary file to pass any user defined JAXCI_ variables to the
+  # container.
+  JAXCI_TEMP_ENVFILE_DIR=$(mktemp)
+  env | grep "JAXCI_" > "$JAXCI_TEMP_ENVFILE_DIR"
+
+  # On Windows, convert MSYS Linux-like paths to Windows paths.
+  if [[ "$(uname -s)" =~ "MSYS_NT" ]]; then
+    echo 'Converting MSYS Linux-like paths to Windows paths for setting up the Docker container'
+    # Convert all "JAXCI.*DIR" variables
+    source <(python ./ci/utilities/convert_msys_paths_to_win_paths.py --convert $(env | grep "JAXCI.*DIR" | awk -F= '{print $1}'))
+  fi
+
+  # Start the container.
+  docker run $JAXCI_DOCKER_ARGS --name jax \
+          --env-file "$JAXCI_TEMP_ENVFILE_DIR" \
+          -w "$JAXCI_DOCKER_WORK_DIR" -itd --rm \
+          -v "$JAXCI_JAX_GIT_DIR:$JAXCI_DOCKER_WORK_DIR" \
+          "$JAXCI_DOCKER_IMAGE" \
+          bash
+
+  if [[ "$(uname -s)" =~ "MSYS_NT" ]]; then
+    # Allow requests from the container.
+    CONTAINER_IP_ADDR=$(docker inspect -f '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' jax)
+    netsh advfirewall firewall add rule name="Allow Metadata Proxy" dir=in action=allow protocol=TCP localport=80 remoteip="$CONTAINER_IP_ADDR"
+  fi
+fi