add docker version

docker/mysql/Dockerfile

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+ARG MYSQL_VERSION
+FROM mysql:latest
+
+LABEL maintainer="Ludovic CANDELLIER <ludo@huma.net>"
+
+#####################################
+# Set Timezone
+#####################################
+
+ARG TZ=UTC
+ENV TZ ${TZ}
+RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone && chown -R mysql:root /var/lib/mysql/
+
+COPY my.cnf /etc/mysql/conf.d/my.cnf
+
+RUN chmod 0444 /etc/mysql/conf.d/my.cnf
+
+CMD ["mysqld"]
+
+EXPOSE 3306

docker/mysql/docker-entrypoint-initdb.d/.gitignore

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+*.sql

docker/mysql/docker-entrypoint-initdb.d/createdb.sql.example

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+#
+# Copy createdb.sql.example to createdb.sql
+# then uncomment then set database name and username to create you need databases
+#
+# example: .env MYSQL_USER=appuser and needed db name is myshop_db
+#
+#    CREATE DATABASE IF NOT EXISTS `myshop_db` ;
+#    GRANT ALL ON `myshop_db`.* TO 'appuser'@'%' ;
+#
+#
+# this sql script will auto run when the mysql container starts and the $DATA_PATH_HOST/mysql not found.
+#
+# if your $DATA_PATH_HOST/mysql exists and you do not want to delete it, you can run by manual execution:
+#
+#     docker-compose exec mysql bash
+#     mysql -u root -p < /docker-entrypoint-initdb.d/createdb.sql
+#
+
+#CREATE DATABASE IF NOT EXISTS `dev_db_1` COLLATE 'utf8_general_ci' ;
+#GRANT ALL ON `dev_db_1`.* TO 'default'@'%' ;
+
+#CREATE DATABASE IF NOT EXISTS `dev_db_2` COLLATE 'utf8_general_ci' ;
+#GRANT ALL ON `dev_db_2`.* TO 'default'@'%' ;
+
+#CREATE DATABASE IF NOT EXISTS `dev_db_3` COLLATE 'utf8_general_ci' ;
+#GRANT ALL ON `dev_db_3`.* TO 'default'@'%' ;
+
+#CREATE DATABASE IF NOT EXISTS `opensem` COLLATE 'utf8_general_ci' ;
+#GRANT ALL ON `opensem`.* TO 'opensem'@'%' ;
+
+#GRANT ALL PRIVILEGES ON *.* TO opensem@localhost WITH GRANT OPTION;
+
+FLUSH PRIVILEGES ;

docker/mysql/my.cnf

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+# The MySQL  Client configuration file.
+#
+# For explanations see
+# http://dev.mysql.com/doc/mysql/en/server-system-variables.html
+
+[mysql]
+
+[mysqld]
+sql-mode="STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION"
+character-set-server=utf8
+default-authentication-plugin=mysql_native_password