Add resolutions to featured images

src/templates/blog.js

@@ -34,6 +34,17 @@ export const query = graphql`
           status
           slug
           date(formatString: "MMMM DD, YYYY")
+          featured_media {
+            localFile {
+              childImageSharp {
+                resolutions(width: 600, height: 300) {
+                  src
+                  width
+                  height
+                }
+              }
+            }
+          }
         }
       }
     }