deactivated legacy, updated php to 8.1, misc

Docker/php/Dockerfile

@@ -1,4 +1,4 @@
-FROM php:7.4-fpm
+FROM php:8.1-fpm-bullseye
 
 RUN apt-get update && apt-get install -y \
 		libfreetype6-dev \
@@ -19,7 +19,7 @@ RUN apt-get update && apt-get install -y \
 		docker-php-ext-install opcache && \
 		docker-php-ext-install bcmath && \
 		apt-get install -y git vim && \
-		pecl install redis-4.3.0 && \
+		pecl install redis-5.3.7 && \
     pecl install xdebug-3.1.3 && \
     docker-php-ext-enable redis xdebug
 
@@ -69,6 +69,10 @@ RUN if getent group ${USER_GNAME} ; then groupdel ${USER_GNAME}; fi &&\
 COPY ./bashrc /home/${USER_UNAME}/.bashrc
 COPY ./inputrc /home/${USER_UNAME}/.inputrc
 
+# https://github.com/ProgDroid/composer_update_autocomplete
+RUN mkdir /home/${USER_UNAME}/.bin
+COPY ./composer_update_autocomplete /home/${USER_UNAME}/.bin/composer_update_autocomplete
+RUN printf "complete -C /home/${USER_UNAME}/.composer_update_autocomplete/src/main.rs composer update" >> /home/${USER_UNAME}/.bashrc
 
 # https://dev.to/s1ntaxe770r/how-to-setup-ssh-within-a-docker-container-i5i
 RUN apt-get install -y openssh-server openssh-client