diff --git a/.gitea/workflows/ci.yml b/.gitea/workflows/ci.yml
index ec0957d..268af6f 100644
--- a/.gitea/workflows/ci.yml
+++ b/.gitea/workflows/ci.yml
@@ -40,7 +40,7 @@ jobs:
       #-------------------------------------------------------------------
       - name: Install tools
         run: |
-          apk add --no-cache docker-cli rsync openssh-client
+          apk add --no-cache docker-cli docker-cli-buildx rsync openssh-client
 
       - name: Verify docker
         run: |
@@ -59,7 +59,9 @@ jobs:
       #-------------------------------------------------------------------
       - name: Build arm64 CI image
         run: |
-          docker build -t "$CI_IMAGE" -f ci/Dockerfile .
+          docker buildx version
+          docker buildx build --platform linux/arm64 --load \
+            -t "$CI_IMAGE" -f ci/Dockerfile .
 
       #-------------------------------------------------------------------
       # Build project + unit test + startup smoke test (inside arm64)