buildx failed with: ERROR: failed to solve: process "/bin/sh -c if [ \"${TARGETARCH}\" = \"arm64\" ] && [ \"${BUILDARCH}\" != \"arm64\" ]; then export CC=aarch64-linux-musl-gcc CXX=aarch64-linux-musl-g++; elif [ \"${TARGETARCH}\" = \"amd64\" ] && [ \"${BUILDARCH}\" != \"amd64\" ]; then export CC=x86_64-linux-musl-gcc CXX=x86_64-linux-musl-g++; fi; make -j$(nproc) static_lib" did not complete successfully: exit code: 2