Install Python 3.10.0 (#27247)

tools/dockerfile/grpc_artifact_python_linux_armv7/Dockerfile

@@ -22,10 +22,12 @@ RUN apt update && apt install -y build-essential zlib1g-dev libncurses5-dev libg
 
 ADD install_python_for_wheel_crosscompilation.sh /scripts/install_python_for_wheel_crosscompilation.sh
 
-RUN /scripts/install_python_for_wheel_crosscompilation.sh 3.6.13 /opt/python/cp36-cp36m
-RUN /scripts/install_python_for_wheel_crosscompilation.sh 3.7.10 /opt/python/cp37-cp37m
-RUN /scripts/install_python_for_wheel_crosscompilation.sh 3.8.8 /opt/python/cp38-cp38
-RUN /scripts/install_python_for_wheel_crosscompilation.sh 3.9.2 /opt/python/cp39-cp39
+RUN /scripts/install_python_for_wheel_crosscompilation.sh "3.6.13" "3.6.13" /opt/python/cp36-cp36m
+RUN /scripts/install_python_for_wheel_crosscompilation.sh "3.7.10" "3.7.10" /opt/python/cp37-cp37m
+RUN /scripts/install_python_for_wheel_crosscompilation.sh "3.8.8" "3.8.8" /opt/python/cp38-cp38
+RUN /scripts/install_python_for_wheel_crosscompilation.sh "3.9.2" "3.9.2" /opt/python/cp39-cp39
+RUN /scripts/install_python_for_wheel_crosscompilation.sh "3.9.2" "3.9.2" /opt/python/cp39-cp39
+RUN /scripts/install_python_for_wheel_crosscompilation.sh "3.10.0" "3.10.0rc1" /opt/python/cp310-cp310
 
 ENV AUDITWHEEL_ARCH armv7l
 ENV AUDITWHEEL_PLAT linux_armv7l

tools/dockerfile/grpc_artifact_python_linux_armv7/install_python_for_wheel_crosscompilation.sh

@@ -19,11 +19,12 @@ set -ex
 # $1 - python version in "3.X.Y" format
 # $2 - python tags (as in manylinx images) e.g. "/opt/python/cp37-cp37m"
 PYTHON_VERSION="$1"
-PYTHON_PREFIX="$2"
+PYTHON_RELEASE="$2"
+PYTHON_PREFIX="$3"
 
-curl -O "https://www.python.org/ftp/python/${PYTHON_VERSION}/Python-${PYTHON_VERSION}.tar.xz"
-tar -xf "Python-${PYTHON_VERSION}.tar.xz"
-pushd "Python-${PYTHON_VERSION}"
+curl -O "https://www.python.org/ftp/python/${PYTHON_VERSION}/Python-${PYTHON_RELEASE}.tar.xz"
+tar -xf "Python-${PYTHON_RELEASE}.tar.xz"
+pushd "Python-${PYTHON_RELEASE}"
 
 # In this step, we are building python that can run on the architecture where the build runs (x64).
 # Since the CC, CXX and other env vars are set by default to point to the crosscompilation toolchain,