Hello,
Im really curious about this repo because Im also trying to build a photography gallery for gatsby. Unfortunately I couldnt get the repo to build. I cloned, ran npm i and then added some photos in folders to src/images/photos per the README and get this error: ""bucketName" is a required option for gatsby-plugin-s3". I just wanted to review the generated HTML locally and then maybe sync to netlify - I dont want or need to use an S3 bucket.
Sidenote - have you deployed it anywhere online where I could look at it?