Update README.md

README.md

-# debian-build
+# kicad
 
-Docker image for Debian package builds
-
-## Available images
-
-[Debian](https://hub.docker.com/repository/docker/beagle/debian-build/general)
-
-* `beagle/debian-build:latest`: amd64, armhf, arm64 - Bookworm
-* `beagle/debian-build:bookworm`: amd64, armhf, arm64 - Bookworm
-* `beagle/debian-build:bullsye`: amd64, armhf, arm64 - Bullseye
-
-[Ubuntu](https://hub.docker.com/repository/docker/beagle/ubuntu-build/general)
-
-* `beagle/ubuntu-build:latest`: amd64, armhf, arm64, riscv64 - 23.10
+Docker image for nightly Kicad builds