buildx failed with: ERROR: failed to solve: ghcr.io/npo-poms/kaniko:6: failed to resolve source metadata for ghcr.io/npo-poms/kaniko:6: failed to copy: httpReadSeeker: failed open: content at https://ghcr.io/v2/npo-poms/kaniko/manifests/sha256:3e67e4a8f943d8bed11ae58c6324d6a037a4303a1b0b9a8bde9b8a2dae53f622 not found: not found