Switch to docker buildx for buildkit support

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 0861e63fffa0b03b5d22f90d98659faa5859b3bb..08028f987a2fdaf1d0004c92896299ffa50e3d45 100644 (file)
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -26,7 +26,7 @@ jobs:
           username: ${{ secrets.DOCKER_PULL_USERNAME }}
           password: ${{ secrets.DOCKER_PULL_PASSWORD }}
       - name: Build image variant "${{ matrix.variant }}"
-        run: cd ${{ matrix.variant }} && docker build ./ -t ${{ matrix.docker-tag }}
+        run: cd ${{ matrix.variant }} && docker buildx ./ -t ${{ matrix.docker-tag }}
       - name: Run tests
         env:
           ROUNDCUBEMAIL_TEST_IMAGE: ${{ matrix.docker-tag }}