add env variables for backup container

docker/backup/backup_db.sh

@@ -1,8 +1,5 @@
 #!/bin/bash
 
-DB_USER="root"
-DB_PASS="root"
-DB_NAME="laravel"
 BACKUP_DIR="/backups"
 
 mkdir -p "$BACKUP_DIR"
@@ -10,10 +7,10 @@ mkdir -p "$BACKUP_DIR"
 DAY=$(date +%d)
 FILE="$BACKUP_DIR/$DAY.sql"
 
-mysqldump -h mariadb -u "$DB_USER" -p"$DB_PASS" "$DB_NAME" > "$FILE" 2>/dev/null
+mysqldump -h mariadb -u "$MYSQL_USER" -p"$MYSQL_PASSWORD" "$MYSQL_DATABASE" > "$FILE" 2>/dev/null
 
 if [ $? -eq 0 ]; then
-  echo "[$(date)] Backup $DB_NAME sauvegardé dans $FILE" >> "$BACKUP_DIR/backup.log"
+  echo "[$(date)] Backup $MYSQL_DATABASE sauvegardé dans $FILE" >> "$BACKUP_DIR/backup.log"
 else
-  echo "[$(date)] ERREUR lors du backup de $DB_NAME" >> "$BACKUP_DIR/backup.log"
+  echo "[$(date)] ERREUR lors du backup de $MYSQL_DATABASE" >> "$BACKUP_DIR/backup.log"
 fi