mariadb and nginx works both with debian and alpine

+ makefile a little clean up

srcs/requirements/mariadb/Dockerfile

@@ -1,26 +1,48 @@
-FROM debian:buster
+# debian -----------------------------------------------------
 
-ARG DB_NAME
-ARG DB_USER
-ARG DB_PSWD
+#	FROM debian:buster
+#
+#	ARG DB_NAME
+#	ARG DB_USER
+#	ARG DB_PSWD
+#
+#	RUN	apt update && apt install -y \
+#		mariadb-client \
+#		mariadb-server \
+#		&& \
+#		rm -rf /var/lib/apt/lists/*
+#
+#	# config file .cnf :
+#	COPY ./conf/50-server.cnf.debian /etc/mysql/mariadb.conf.d/50-server.cnf
 
-RUN	apt update && apt install -y \
-	mariadb-client \
-	mariadb-server
-RUN rm -rf /var/lib/apt/lists/*
+# alpine -----------------------------------------------------
+
+	FROM alpine:3.15
+
+	ARG DB_NAME
+	ARG DB_USER
+	ARG DB_PSWD
+
+	# vim and bash for debug
+	RUN apk update && apk add \
+		mariadb \
+		mariadb-client \
+		vim bash \
+		&& \
+		rm -rf /var/cache/apk*
+
+	# config file .cnf :
+	COPY ./conf/mariadb-server.cnf.alpine /etc/my.cnf.d/mariadb-server.cnf
+
+# common -----------------------------------------------------
+
+# init mysql database
+RUN mysql_install_db --user=mysql --ldata=/var/lib/mysql && \
+	mkdir -p /var/run/mysqld && \
+	chown -R mysql:root /var/run/mysqld
 
 # configure wp database
-RUN	service mysql start && \
-	mariadb --execute="CREATE DATABASE ${DB_NAME};" && \
-	mariadb --execute="CREATE USER '${DB_USER}'@'localhost' IDENTIFIED BY '${DB_PSWD}';" && \
-	mariadb --execute="GRANT ALL PRIVILEGES ON ${DB_NAME}.* TO '${DB_USER}'@'localhost' with grant option;"
+COPY ./conf/create_db.sql /usr/bin/create_db.sql
 
-# # config file 50-server.cnf :
-# # uncomment port = 3306
-# RUN sed -i "s/^#port/port /g" /etc/mysql/mariadb.conf.d/50-server.cnf
-# # comment bind-address = 127.0.0.1
-# RUN sed -i "s/^bind-address /#bind-address/g" /etc/mysql/mariadb.conf.d/50-server.cnf
-COPY ./conf/50-server.cnf ./
-
-ENTRYPOINT [ "mysqld" ]
+ENTRYPOINT [ "mysqld", "--user=mysql", "--init-file=/usr/bin/create_db.sql" ]