Docker build maybe broken on x86_64

[alokmenghrajani]

I believe docker build -t blobs_all . is broken on x86_64. It seems to work fine on aarch64.

I'm attaching the build log, and the last few lines:

Dockerfile:9
--------------------
   7 |     WORKDIR /build
   8 |     
   9 | >>> RUN nix-build -A ${TARGET}
  10 |     
  11 |     FROM scratch AS artifacts
--------------------
ERROR: failed to solve: process "/bin/sh -c nix-build -A ${TARGET}" did not complete successfully: exit code: 1

I get a similar error when I try docker build --build-arg TARGET=kernel .