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authorreivilibre <oliverw@matrix.org>2022-08-12 13:25:47 +0000
committerGitHub <noreply@github.com>2022-08-12 14:25:47 +0100
commit2c5e2ae898ca9c4de6043b4a3e51e67eae8a87f9 (patch)
tree5fc392d8235bc39ea6ec7a885d4ea74dc28d018f /docker/README.md
parentAdd `openssl` example for registration HMAC (#13472) (diff)
downloadsynapse-2c5e2ae898ca9c4de6043b4a3e51e67eae8a87f9.tar.xz
Document that the `DOCKER_BUILDKIT=1` flag is needed to build the docker image. (#13515)
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diff --git a/docker/README.md b/docker/README.md
index 5b7de2fe38..017f046c58 100644
--- a/docker/README.md
+++ b/docker/README.md
@@ -191,7 +191,7 @@ If you need to build the image from a Synapse checkout, use the following `docke
  build` command from the repo's root:
 
 ```
-docker build -t matrixdotorg/synapse -f docker/Dockerfile .
+DOCKER_BUILDKIT=1 docker build -t matrixdotorg/synapse -f docker/Dockerfile .
 ```
 
 You can choose to build a different docker image by changing the value of the `-f` flag to