Added script for nextcloud database dump and backup

jenkins/nextcloud_database

@@ -0,0 +1,20 @@
+pipeline {
+    agent any
+    
+    stages {
+        stage('Run MariaDB') {
+            agent {
+                docker {
+                    image 'mariadb:latest'
+                    args "--volumes-from=jenkins -v /srv/dev-disk-by-uuid-27fc012e-a1fa-4c7c-9dad-82770888cd03/nextcloud_backup/database_dump:/data/ --entrypoint=''"
+                    reuseNode false
+                }
+            }
+            steps {
+                sh "yes | cp -rf /data/backup_yesterday.dmp /data/backup_early.dmp 2>/dev/null || :"
+                sh "yes | cp -rf /data/backup_latest.dmp /data/backup_yesterday.dmp 2>/dev/null || :"
+                sh "mariadb-dump -u nextcloud -h 10.10.1.32 --all-databases -ppassword -v > /data/backup_latest.dmp"
+            }
+        }
+    }
+}