Changed the base image of pex-watcher to almalinux and updated the Python...

Changed the base image of pex-watcher to almalinux and updated the Python installation accordingly (suggestions from 5ba198a6)

config/pex-watcher/Dockerfile.pex

-FROM centos/python-38-centos7:20210726-fad62e9
+FROM almalinux/8-base
 
 USER root
 

config/pex-watcher/bin/install-python310.sh

@@ -6,25 +6,26 @@ set -o pipefail
 
 # Install Python 3.10
 PYTHON_VERSION=3.10.9
-yum install -y gcc
-yum install -y epel-release
-yum install -y openssl11-devel
-yum install -y bzip2-devel
-yum install -y libffi-devel
+
+# Oops - lol. Note to self - never be the dev that caused that: https://almalinux.org/blog/2023-12-20-almalinux-8-key-update/
+rpm --import https://repo.almalinux.org/almalinux/RPM-GPG-KEY-AlmaLinux
+
+dnf update -y
+
+dnf install gcc openssl-devel bzip2-devel libffi-devel zlib-devel wget make -y
 
 cd /opt
 wget https://www.python.org/ftp/python/$PYTHON_VERSION/Python-$PYTHON_VERSION.tgz
 tar xzf Python-$PYTHON_VERSION.tgz && cd Python-$PYTHON_VERSION
 # tragic workaround to make Python find openssl 1.1 instead of not finding 1.0
-sed -i 's/PKG_CONFIG openssl /PKG_CONFIG openssl11 /g' configure
+#sed -i 's/PKG_CONFIG openssl /PKG_CONFIG openssl11 /g' configure
 ./configure --enable-optimizations
+make -j 2
 make altinstall
 cd ..
 rm -rf Python-$PYTHON_VERSION.tgz
-yum clean all
-rm -rf /var/cache/yum
+dnf clean packages
 
 # Make symbolic link of python3 install to where it's installed on dev
 mkdir -p /home/ssa/bin
 ln -s "$(which python3.10)" /home/ssa/bin/python3.10
-