diff --git a/.github/workflows/docker-images.yml b/.github/workflows/docker-images.yml
index 73ae70b980..0facd5de36 100644
--- a/.github/workflows/docker-images.yml
+++ b/.github/workflows/docker-images.yml
@@ -13,6 +13,7 @@ jobs:
   # platform, but we're really only looking for issues that are
   # architecture-independent.
   linux:
+    # We use a large runner for the additional disk space.
     runs-on: github-hosted-ubuntu-x64-large
     steps:
       - uses: actions/checkout@v4