refactored all to dev

mariadb_dev/README.md

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+# MariaDB
+
+Dockerhub: https://hub.docker.com/_/mariadb
+Project: https://mariadb.org/
+Proxy Port: 3306
+
+It will be quite uncommon to just use this compose file, it's likely you are extending this from another project.
+That's the main context of this container.
+
+## Sample 
+
+### Run multiple databases 
+
+initdb/init.sql
+
+```sql
+
+-- Create BookStack database and user
+CREATE DATABASE IF NOT EXISTS bookstack_db;
+CREATE USER IF NOT EXISTS 'bookstack_user'@'%' IDENTIFIED BY 'bookstack_password';
+GRANT ALL PRIVILEGES ON bookstack_db.* TO 'bookstack_user'@'%';
+
+-- Create WordPress database and user
+CREATE DATABASE IF NOT EXISTS wordpress_db;
+CREATE USER IF NOT EXISTS 'wordpress_user'@'%' IDENTIFIED BY 'wordpress_password';
+GRANT ALL PRIVILEGES ON wordpress_db.* TO 'wordpress_user'@'%';
+
+FLUSH PRIVILEGES;
+```
+
+### Change command
+
+```yaml
+# heimdall, pwigo
+command: --max_allowed_packet=32505856
+# monica
+command: --transaction-isolation=READ-COMMITTED --binlog-format=ROW --innodb-file-per-table=1 --skip-innodb-read-only-compressed
+# nextcloud
+command: --transaction-isolation=READ-COMMITTED --log-bin=binlog --binlog-format=ROW
+```

mariadb_dev/docker-compose.yml

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+services:
+  mariadb:
+    image: ${MARIADB_IMAGE:-mariadb:latest}
+    restart: unless-stopped
+    command: >
+      --transaction-isolation=READ-COMMITTED
+      --binlog-format=ROW
+      --innodb-file-per-table=1
+      --skip-innodb-read-only-compressed
+    environment:
+      - MARIADB_DATABASE=${MARIADB_DATABASE:-mydb}
+      - MARIADB_ROOT_PASSWORD=${MARIADB_ROOT_PASSWORD:-ChangeThisPassword}
+      - MARIADB_USER=${MARIADB_USER:-dbuser}
+      - MARIADB_PASSWORD=${MARIADB_PASSWORD:-AlsoChangeThisPassword}
+    volumes:
+      - mariadb-data:/var/lib/mysql
+
+volumes:
+  mariadb-data:

mariadb_dev/sample.env

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+# MariaDB
+MARIADB_IMAGE=mariadb:latest
+MARIADB_MARIADB_DATABASE=mydb
+MARIADB_MARIADB_ROOT_PASSWORD=ChangeThisPassword0123456789ABCD
+MARIADB_MARIADB_PASSWORD=AlsoChangeThisPassword0123456789
+MARIADB_MARIADB_USER=dbuser