[PATCH next v2 1/3] CI: use GNU mirror for grub (and switch to HTTPS)

[Quentin Schulz <foss+uboot@0leil.net>]

From: Quentin Schulz <quentin.schulz@cherry.de>

GNU announced they activated mirrors for git servers[1] in May this
year.

The main git server keeps being very unreliable and switching to those
mirrors seems to improve reliability (albeit somewhat slow).

Yes, the URL in this patch has nothing in common with the URL in the
linked mail, it was extracted from the Clone section in the mirrored
cgit page[2].

While at it, switch to the HTTPS clone which is "more secure" than git
protocol.

[1] https://lists.gnu.org/archive/html/savannah-users/2025-05/msg00002.html
[2] https://cgit.git.savannah.gnu.org/cgit/grub.git/

Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Quentin Schulz <quentin.schulz@cherry.de>
---
 tools/docker/Dockerfile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/docker/Dockerfile b/tools/docker/Dockerfile
index 630b7f0e141..402901c2d82 100644
--- a/tools/docker/Dockerfile
+++ b/tools/docker/Dockerfile
@@ -148,7 +148,7 @@ RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
 	zip
 
 # Build GRUB UEFI targets for ARM & RISC-V, 32-bit and 64-bit
-RUN git clone git://git.savannah.gnu.org/grub.git /tmp/grub && \
+RUN git clone https://https.git.savannah.gnu.org/git/grub.git /tmp/grub && \
 	cd /tmp/grub && \
 	git checkout grub-2.12 && \
 	git config --global user.name "GitLab CI Runner" && \

-- 
2.52.0