[PATCH 1/1] Dockerfile: add graphviz

[Heinrich Schuchardt]

In reStructured text documentation we somtimes find formatting problems.
Therefore I would like to add 'make htmldocs' to our Gitlab Ci steps and
let all warning result in a build failure.

For building the htmldocs target without warnings we need the Graphviz
package.

Signed-off-by: Heinrich Schuchardt <xypron.glpk at gmx.de>
---
resent due to missing Cc:u-boot at lists.denx.de
---
 Dockerfile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Dockerfile b/Dockerfile
index d73ff3f..7d6d322 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -49,6 +49,7 @@ RUN apt-get update && apt-get install -y \
 	flex \
 	gdisk \
 	git \
+	graphviz \
 	grub-efi-amd64-bin \
 	grub-efi-ia32-bin \
 	iasl \
--
2.24.1