Correct usage of variables.

miniserver.yaml

@@ -17,18 +17,18 @@
 
         - name: Backup mysql databases
           shell: docker exec {{ item }}-db mysqldump -u{{ item }} -p{{ lookup('vars', item ~ '-password') }} {{ item }} > {{ backup_dir }}/{{ item }}/db-{{ ansible_date_time.iso8601_basic_short }}.sql
-          loop: "{{ mysql_databases }}"
+          loop: "{{ databases }}"
 
         - name: Compress database backup files
           shell: gzip {{ backup_dir }}/{{ item }}/db-{{ ansible_date_time.iso8601_basic_short }}.sql
-          loop: "{{ mysql_databases }}"
+          loop: "{{ databases }}"
 
         - name: Fetch database backups
           fetch:
             src: "{{ backup_dir }}/{{ item }}/db-{{ ansible_date_time.iso8601_basic_short }}.sql.gz"
             dest: "{{ local_backup }}/{{ item }}/db-{{ ansible_date_time.iso8601_basic_short }}.sql.gz/"
             flat: yes
-          loop: "{{ mysql_databases }}"
+          loop: "{{ databases }}"
 
         - name: Clean backup directory
           file: