Remove problematic platforms

The removed platforms repeatedly caused building errors, and are pretty
niche, too.

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index c6d5d7032f9a06515c5ac66951e75abf70baf514..4efe04070b4ffaa2e1a30a30a9ff8b5e7cde6e0c 100644 (file)
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -61,7 +61,7 @@ jobs:
         uses: docker/build-push-action@v5
         with:
           context: ${{ matrix.variant }}
-          platforms: "linux/arm64,linux/arm/v6,linux/arm/v7,linux/s390x,linux/ppc64le,linux/386,linux/amd64,"
+          platforms: "linux/arm64,linux/arm/v6,linux/arm/v7,linux/386,linux/amd64,"
           push: true
           tags: ${{ matrix.docker-tag }}
           # does not work linux/arm/v5 AND linux/mips64le - composer does not support  mips64le or armv5 nor does the php image support them on the alpine variant