Added examples and documentation for the published docker image

docker/examples/photos/README.md

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+# Standalone Zipped Family Tree Container with Photos
+
+This example leverages a multi-stage Docker build to automatically compress your `.ged` file and `photos/` folder into a secure `.gdz` archive on-the-fly, preserving your image directory path structures.
+
+## Structure
+* Place your `family.ged` file here.
+* Place your photos also in this directory, or inside a `photos/` folder in this directory. If you put the photos in the `photos/` directory, make sure your GEDCOM file contains file references containing the `photos/` prefix. See the sample [family.ged](family.ged).
+
+## Instructions
+
+1. Build your custom container:
+   ```bash
+   docker build -t my-photo-tree .
+   ```
+2. Run your container:
+   ```bash
+   docker run -d -p 8080:8080 my-photo-tree
+   ```