buildx failed with: ERROR: failed to solve: process "/bin/sh -c set -eux\n case \"$TARGETPLATFORM\" in\n 'linux/amd64') export GOARCH=amd64 ;;\n 'linux/arm/v6') export GOARCH=arm GOARM=6 ;;\n 'linux/arm/v7') export GOARCH=arm GOARM=7 ;;\n 'linux/arm64') export GOARCH=arm64 ;;\n *) echo \"Unsupported target: $TARGETPLATFORM\" && exit 1 ;;\n esac\n go build -ldflags='-w -s' -trimpath ./cmd/flarectl\n" did not complete successfully: exit code: 1