add sockets extension + config xdebug

README.md

php/8.0-cli/README.md

php/8.0/README.md

php/8.1-cli/Dockerfile

php/8.1-cli/README.md

php/8.1-ext/Dockerfile

php/8.1-ext/README.md

php/8.1-ext/config-vhost

php/8.1-ext/create_vhost

php/8.1-ext/php.ini

php/8.1-ext/start

php/8.1/Dockerfile

php/8.1/README.md

php/8.2-ext/Dockerfile

php/8.2-ext/README.md

php/8.2-ext/config-vhost

php/8.2-ext/create_vhost

php/8.2-ext/php.ini

php/8.2-ext/start

php/8.2/Dockerfile