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-rw-r--r--.github/workflows/tests.yml2
1 files changed, 2 insertions, 0 deletions
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 6fa61ab559..4f58069702 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -366,6 +366,8 @@ jobs:
       # Build initial Synapse image
       - run: docker build -t matrixdotorg/synapse:latest -f docker/Dockerfile .
         working-directory: synapse
+        env:
+          DOCKER_BUILDKIT: 1
 
       # Build a ready-to-run Synapse image based on the initial image above.
       # This new image includes a config file, keys for signing and TLS, and