added custome cron scripts

files/cron/postgres-backup

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+# Variables
+LOCATION="/home/juulk/docker/postgresql"
+RETENTION=7
+DATE=$(date +"%Y-%m-%d_%H-%M-%S")
+FILENAME="backup-$DATE.sql"
+
+# Dump all databases
+docker exec -u postgres postgres pg_dumpall > "$LOCATION/$FILENAME"
+
+# Zip dump
+gzip "$LOCATION/$FILENAME"
+
+# Delete old backups
+find "$LOCATION" -name "backup-*.sql.gz" -type f -mtime +$RETENTION -exec rm {} \;