WCOW fails to load custom frontend about buildkit HOT 3 OPEN

  PS E:\repro-4892> docker buildx build .
[+] Building 1.3s (4/4) FINISHED                                                                                      remote:buildkit-exp
 => [internal] load build definition from Dockerfile                                                                                 0.1s
 => => transferring dockerfile: 80B                                                                                                  0.0s
 => resolve image config for docker-image://docker.io/100909/dockerfile-4892:latest                                                  0.4s
 => [auth] 100909/dockerfile-4892:pull token for registry-1.docker.io                                                                0.0s
 => CACHED docker-image://docker.io/100909/dockerfile-4892:latest@sha256:483bf8f1796a24323c1ea215016297988326afb84ddc97312e0fd17b7c  0.0s
 => => resolve docker.io/100909/dockerfile-4892:latest@sha256:483bf8f1796a24323c1ea215016297988326afb84ddc97312e0fd17b7caeb5ca       0.0s
WARNING: No output specified with remote driver. Build result will only remain in the build cache. To push result image into registry use --push or to load image into docker use --load
Dockerfile:1
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   1 | >>> # syntax=docker.io/100909/dockerfile-4892
   2 |
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ERROR: failed to solve: failed to create shim task: invalid OCI spec - Type 'bind' not supported: unknown

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View build details: docker-desktop://dashboard/build/buildkit-exp/buildkit-exp0/0gzd6kdf2hllfq7ygzllikkm2

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