How to serve images without domain name

i wish to serve images to the blog like this

> <img srcset="/content/images/size/w300/2020/02/digicert-ssl.jpg 300w, /content/images/size/w600/2020/02/xdigicert-ssl.jpg.pagespeed.ic.c79mBHqTVx.webp 600w, /content/images/size/w1000/2020/02/digicert-ssl.jpg 1000w, /content/images/size/w2000/2020/02/xdigicert-ssl.jpg.pagespeed.ic.9xPCmgF_e3.webp 2000w" sizes="(max-width: 800px) 400px,
>                         (max-width: 1170px) 1170px,
>                             2000px" src="/content/images/size/w2000/2020/02/xdigicert-ssl.jpg.pagespeed.ic.9xPCmgF_e3.webp" alt="Enabling OCSP Stapling on your Bitnami Ghost blog" data-pagespeed-url-hash="61510738" onload="pagespeed.CriticalImages.checkImageForCriticality(this);">

whereas in my blog I get the full domain to the src

<img srcset="http://34.94.43.10/content/images/2020/11/XzA2MDExMTcuanBn.jpg 300w,
                            http://34.94.43.10/content/images/2020/11/XzA2MDExMTcuanBn.jpg 600w,
                            http://34.94.43.10/content/images/2020/11/XzA2MDExMTcuanBn.jpg 1000w,
                            http://34.94.43.10/content/images/2020/11/XzA2MDExMTcuanBn.jpg 2000w" sizes="(max-width: 800px) 400px,
                        (max-width: 1170px) 1170px,
                            2000px" src="http://34.94.43.10/content/images/2020/11/XzA2MDExMTcuanBn.jpg" alt="Test post" data-pagespeed-url-hash="1150524654" onload="pagespeed.CriticalImages.checkImageForCriticality(this);">

Can anyone give me a hint on how to render images like this.
TIA