Cannot automatically refresh web report

I have link to the internet csv-file from external source. Source is refreshing every minute. I can put this data to the Power BI desktop and I refresh dataset on a regular basis manually (clicking refresh button). After it I published my dashboard on Power BI online and I created a link for external site (Power BI inside website). Now I need to press refresh button manually. How I can make this process more automated? I.e. to get the data from my external link to power BI every minute. And also from power BI to website every minute. What should I do?