Add note on github pages repository structure

Signed-off-by: Evan Lezar <elezar@nvidia.com>

404.md

@@ -46,3 +46,20 @@ Most distributions that use RPM packages. These include:
 
 * `https://nvidia.github.io/libnvidia-container/stable/rpm`
 * `https://nvidia.github.io/libnvidia-container/experimental/rpm`
+
+## GitHub Pages repository structure
+
+The packages here are served from the [`gh-pages` branch](https://github.com/NVIDIA/libnvidia-container/tree/gh-pages/) of the
+`github.com/NVIDIA/libnvidia-container` repository. The repository folder structure maps directly to the package manager URLs.
+
+For example, the repositories discused above can be found at:
+* `stable/deb`: https://github.com/NVIDIA/libnvidia-container/tree/gh-pages/stable/deb
+* `experimental/deb`: https://github.com/NVIDIA/libnvidia-container/tree/gh-pages/experimental/deb
+* `stable/rpm`: https://github.com/NVIDIA/libnvidia-container/tree/gh-pages/stable/rpm
+* `experimental/rpm`: https://github.com/NVIDIA/libnvidia-container/tree/gh-pages/experimental/rpm
+
+This also means that packages can be downloaded directly by appending the package filename to the following URLs:
+* `https://raw.githubusercontent.com/NVIDIA/libnvidia-container/gh-pages/stable/deb/amd64/`
+* `https://raw.githubusercontent.com/NVIDIA/libnvidia-container/gh-pages/experimental/deb/amd64/`
+* `https://raw.githubusercontent.com/NVIDIA/libnvidia-container/gh-pages/stable/rpm/amd64/`
+* `https://raw.githubusercontent.com/NVIDIA/libnvidia-container/gh-pages/experimental/rpm/amd64/`