buildx failed with: ERROR: failed to build: failed to solve: failed to parse ref "ghcr.io/Syati/agent-stack": invalid reference format: repository name (Syati/agent-stack) must be lowercase

The strategy configuration was canceled because "build.ubuntu-latest_linux_amd64" failed

The operation was canceled.

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, docker/build-push-action@v6, docker/login-action@v3, docker/metadata-action@v5, docker/setup-buildx-action@v3. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/