CI: Add ChromiumOS utilities

We need cgpt and futility for building test images. Add them.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/tools/docker/Dockerfile b/tools/docker/Dockerfile
index 3d2b64a..6e6ae9e 100644
--- a/tools/docker/Dockerfile
+++ b/tools/docker/Dockerfile
@@ -39,6 +39,7 @@
 	binutils-dev \
 	bison \
 	build-essential \
+	cgpt \
 	clang-16 \
 	coreutils \
 	cpio \
@@ -115,6 +116,8 @@
 	util-linux \
 	uuid-dev \
 	virtualenv \
+	vboot-kernel-utils \
+	vboot-utils \
 	xxd \
 	zip \
 	&& rm -rf /var/lib/apt/lists/*