buildx failed with: ERROR: failed to build: failed to solve: process "/bin/sh -c nix profile install -j1 github:cachix/devenv/$DEVENV_VERSION nixpkgs#gnugrep --extra-experimental-features 'flakes nix-command' --accept-flake-config && nix-collect-garbage -d && rm -rf /root/.cache" did not complete successfully: exit code: 1