buildx failed with: ERROR: failed to solve: process "/bin/bash -c if [[ ! -z \"$UBUNTU_MIRROR\" ]] ; then sed -i \"s/archive.ubuntu.com/$UBUNTU_MIRROR/g\" /etc/apt/sources.list.d/ubuntu.sources && sed -i \"s/security.ubuntu.com/$UBUNTU_MIRROR/g\" /etc/apt/sources.list.d/ubuntu.sources ; fi && apt update && DEBIAN_FRONTEND=noninteractive apt install -y --no-install-recommends docker.io tar coreutils jq wget curl nano sudo net-tools time python3 python3-pip python-is-python3 && if [[ ! -z \"$PYTHON_MIRROR\" ]] ; then python3 -m pip config set global.index-url https://$PYTHON_MIRROR/simple ; fi && python3 -m pip install --upgrade pip --break-system-packages && python3 -m pip install flask flask-cors gunicorn --break-system-packages && apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*" did not complete successfully: exit code: 1