From cd9dcfc6bc9ef6ceb97f24b47634bb44b9aaf39f Mon Sep 17 00:00:00 2001
From: MarcoIeni <11428655+MarcoIeni@users.noreply.github.com>
Date: Tue, 21 Jan 2025 11:42:56 +0100
Subject: [PATCH] ci: use ghcr buildkit image

---
 src/ci/docker/run.sh | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/ci/docker/run.sh b/src/ci/docker/run.sh
index d1bc0519bc1e..d2697ac27ab7 100755
--- a/src/ci/docker/run.sh
+++ b/src/ci/docker/run.sh
@@ -123,6 +123,7 @@ if [ -f "$docker_dir/$image/Dockerfile" ]; then
       build_args+=("--build-arg" "SCRIPT_ARG=${DOCKER_SCRIPT}")
     fi
 
+    GHCR_BUILDKIT_IMAGE="ghcr.io/rust-lang/buildkit:buildx-stable-1"
     # On non-CI jobs, we try to download a pre-built image from the rust-lang-ci
     # ghcr.io registry. If it is not possible, we fall back to building the image
     # locally.
@@ -140,7 +141,9 @@ if [ -f "$docker_dir/$image/Dockerfile" ]; then
     elif [[ "$PR_CI_JOB" == "1" ]];
     then
         # Enable a new Docker driver so that --cache-from works with a registry backend
-        docker buildx create --use --driver docker-container
+        # Use a custom image to avoid DockerHub rate limits
+        docker buildx create --use --driver docker-container \
+          --driver-opt image=${GHCR_BUILDKIT_IMAGE}
 
         # Build the image using registry caching backend
         retry docker \
@@ -156,7 +159,9 @@ if [ -f "$docker_dir/$image/Dockerfile" ]; then
             --password-stdin
 
         # Enable a new Docker driver so that --cache-from/to works with a registry backend
-        docker buildx create --use --driver docker-container
+        # Use a custom image to avoid DockerHub rate limits
+        docker buildx create --use --driver docker-container \
+          --driver-opt image=${GHCR_BUILDKIT_IMAGE}
 
         # Build the image using registry caching backend
         retry docker \