fix buildx

.gitlab/ci/build-image.gitlab-ci.yml

@@ -23,7 +23,7 @@ build-amd64:
 build-arm64:
   stage: build-arm64
   needs: ["build-addon-zip"]
-  image: docker/buildx-bin  
+  image: slumber/docker-python  
   variables:
     DOCKER_DRIVER: overlay2
     DOCKER_TLS_CERTDIR: "/certs"
@@ -31,7 +31,13 @@ build-arm64:
   
   services:
   - docker:19.03.12-dind
-
+  before_script:
+    - apk add curl
+    - mkdir -p ~/.docker/cli-plugins
+    - curl -sSLo ~/.docker/cli-plugins/docker-buildx https://github.com/docker/buildx/releases/download/$BUILDX_VERSION/buildx-$BUILDX_VERSION.linux-amd64
+    - chmod +x ~/.docker/cli-plugins/docker-buildx
+    - docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
+    - docker info
   script:
     - RP_VERSION="$(python scripts/get_replication_version.py)"
     - VERSION="$(python scripts/get_addon_version.py)"