Updated README.

diff --git a/docker/README.md b/docker/README.md
index 99bd85f2fe5be892868dda442ce3b6d950e9ca3d..6043cc44be96da61d2629184e56c47301b5e7e61 100644 (file)
--- a/docker/README.md
+++ b/docker/README.md
@@ -36,4 +36,12 @@ docker buildx build --platform linux/arm/v7 -f ./docker/Dockerfile --build-arg S
 
 ## AirPlay 1 Only
 
-The AirPlay1 only dockerfile is in the `airplay1` folder. This also includes the `start.sh` script used by the container. Please note that the AirPlay 1 image build via the AirPlay 2 branch does not work with multiple instances on the same hardware.
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+The AirPlay1 only dockerfile is in the `airplay1` folder. This also includes the `start.sh` script used by the container. Please note that the AirPlay 1 image build via the AirPlay 2 branch does not work with multiple instances on the same hardware.
+
+## GitHub Action Builds
+
+Requires the following secrets to be set in the repo:
+- `DOCKER_REGISTRY` - docker.io if using Docker Hub, else set to your registry URL.
+- `DOCKER_REGISTRY_TOKEN` - Access token for your registry.
+- `DOCKER_REGISTRY_USER` - Login user for your registry.
+- `DOCKER_IMAGE_NAME` - The name of the image, for example `your-registry.com/shairport-sync` or just `your-username/shairport-sync` if using Docker Hub.
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