From 04206aebdf2444f189a5744b5cb62d419ff83e8b Mon Sep 17 00:00:00 2001
From: Eric Eastwood <erice@element.io>
Date: Thu, 19 Feb 2026 09:57:25 -0600
Subject: [PATCH] Log `docker system info` in CI (#19480)

Follow-up to
https://github.com/element-hq/synapse/pull/19460#discussion_r2819139638
and https://github.com/element-hq/synapse/pull/19475
---
 .github/workflows/tests.yml | 6 ++++++
 changelog.d/19480.misc      | 1 +
 2 files changed, 7 insertions(+)
 create mode 100644 changelog.d/19480.misc

diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 81a72f1f68..98b47130a1 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -693,6 +693,12 @@ jobs:
         with:
           path: synapse
 
+      # Log Docker system info for debugging (compare with your local environment) and
+      # tracking GitHub runner changes over time (can easily compare a run from last
+      # week with the current one in question).
+      - run: docker system info
+        shell: bash
+
       - name: Install Rust
         uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
diff --git a/changelog.d/19480.misc b/changelog.d/19480.misc
new file mode 100644
index 0000000000..60abe04962
--- /dev/null
+++ b/changelog.d/19480.misc
@@ -0,0 +1 @@
+Log `docker system info` in CI so we have a plain record of how GitHub runners evolve over time.