buildx failed with: ERROR: failed to build: failed to solve: process "/bin/sh -c set -ex echo \"**** setup apk testing mirror ****\" && echo \"@testing https://nl.alpinelinux.org/alpine/edge/testing/\" >> /etc/apk/repositories && cat /etc/apk/repositories && echo \"**** install runtime packages ****\" && apk add --no-cache -U --upgrade alsa-utils dbus librespot@testing=~${LIBRESPOT_RELEASE} shairport-sync@testing snapcast=~${SNAPCAST_RELEASE} snapweb@testing && echo \"**** cleanup ****\" && rm -rf /tmp/*" did not complete successfully: exit code: 4

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v3, docker/build-push-action@v6, docker/login-action@v3, docker/metadata-action@v4.4.0, docker/setup-buildx-action@v3, docker/setup-qemu-action@v3. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/