upgrade makefile, add env var to mariadb

srcs/mariadb/Dockerfile

@@ -5,6 +5,6 @@ RUN apk update
 RUN apk add mariadb
 RUN mariadb-install-db
 RUN mkdir /run/mysqld
-COPY init.sql /etc
+COPY init.sql entrypoint.sh /etc/
 
-ENTRYPOINT ["mariadbd", "--no-defaults", "--user=root", "--datadir=/data", "--init-file=/etc/init.sql"]
+ENTRYPOINT ["sh", "/etc/entrypoint.sh"]

srcs/mariadb/entrypoint.sh

@@ -0,0 +1,6 @@
+sed -i "s/DB_USER/$DB_USER/g" /etc/init.sql
+sed -i "s/DB_PASS/$DB_PASS/g" /etc/init.sql
+
+cat /etc/init.sql >/dev/stderr
+
+exec mariadbd --no-defaults --user=root --datadir=/data --init-file=/etc/init.sql

srcs/mariadb/init.sql

@@ -1,2 +1,2 @@
 CREATE DATABASE wordpress;
-GRANT ALL PRIVILEGES ON wordpress.* TO 'wordpress'@'%' IDENTIFIED BY 'wordpress'; 
+GRANT ALL PRIVILEGES ON wordpress.* TO 'DB_USER'@'%' IDENTIFIED BY 'DB_PASS';