Improve CentOS 8 docker

docker/centos8/Dockerfile

 # add this to avoid locale warnings
 RUN yum -y install glibc-locale-source glibc-langpack-en
 RUN localedef -i en_US -f UTF-8 en_US.UTF-8
+# add utils for repos
+RUN dnf -y install wget dnf-utils
+# enable remi repo for php
+RUN dnf -y install http://rpms.remirepo.net/enterprise/remi-release-8.rpm
+RUN wget https://downloads.mariadb.com/MariaDB/mariadb_repo_setup && bash mariadb_repo_setup
 # enable the postgresql repo
 RUN yum -y install https://download.postgresql.org/pub/repos/yum/reporpms/EL-8-x86_64/pgdg-redhat-repo-latest.noarch.rpm
 # enable epel and powertools repos
 RUN dnf -y install https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm
 RUN dnf -y install 'dnf-command(config-manager)' && dnf -y config-manager --set-enabled PowerTools
-# disable postgresql appstream repo
+# set php to remi 7.4
+RUN dnf -y module reset php && dnf -y module enable php:remi-7.4
+# disable mariadb and postgresql appstream repo
+RUN dnf -y module disable mariadb
 RUN dnf -y module disable postgresql
 
 RUN yum -y install \
 php-cli php-xml \
-mariadb-server mariadb php-mysqlnd php-json \
+MariaDB-server MariaDB-client php-mysqlnd php-json \
 postgresql12 postgresql12-server php-pgsql postgis30_12 \
 sqlite php-sqlite3 \
 git wget

docker/centos8/run.sh

 #!/bin/bash
 echo "================================================"
-echo " CentOS 8 (PHP 7.2)"
+echo " CentOS 8 (PHP 7.4)"
 echo "================================================"
-echo -n "[1/4] Starting MariaDB 10.3 ..... "
+echo -n "[1/4] Starting MariaDB 10.4 ..... "
 # initialize mysql
 mysql_install_db > /dev/null
 chown -R mysql:mysql /var/lib/mysql
 # run mysql server
-nohup /usr/libexec/mysqld -u mysql > /root/mysql.log 2>&1 &
+nohup /usr/sbin/mysqld -u mysql > /root/mysql.log 2>&1 &
 # wait for mysql to become available
 while ! mysqladmin ping -hlocalhost >/dev/null 2>&1; do
     sleep 1
 done
 # create database and user on mysql
 mysql -u root >/dev/null << 'EOF'
-CREATE DATABASE `php-crud-api` CHARACTER SET utf8 COLLATE utf8_general_ci;
+CREATE DATABASE `php-crud-api` CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci;
 CREATE USER 'php-crud-api'@'localhost' IDENTIFIED BY 'php-crud-api';
 GRANT ALL PRIVILEGES ON `php-crud-api`.* TO 'php-crud-api'@'localhost' WITH GRANT OPTION;
 FLUSH PRIVILEGES;