buildx failed with: ERROR: failed to solve: process "/bin/sh -c set -eux; case \"${TARGETPLATFORM}\" in \"linux/amd64\") ARCH=\"amd64\" ;; \"linux/arm64\") ARCH=\"arm64\" ;; *) echo \"Unsupported platform ${TARGETPLATFORM}\" >&2; exit 1 ;; esac; FFBIN=\"ffmpeg-git-${ARCH}-static.tar.xz\"; echo \"Downloading ${FFBIN}\"; curl -L \"https://github.com/BtbN/FFmpeg-Builds/releases/latest/download/${FFBIN}\" -o /tmp/${FFBIN}; tar -xJf /tmp/${FFBIN} -C /usr/local/bin --strip-components=1; rm /tmp/${FFBIN}" did not complete successfully: exit code: 2