buildx failed with: ERROR: failed to solve: process "/bin/sh -c set -eux && apt-get install -y software-properties-common && add-apt-repository -y ppa:ondrej/php && echo 'DPkg::options { \"--force-confdef\"; };' >> /etc/apt/apt.conf && apt-get update && apt-get upgrade -y && apt-get install -y --allow-downgrades --allow-remove-essential --allow-change-held-packages php5.6-cli php5.6-common php5.6-curl php5.6-intl php5.6-json php5.6-xml php5.6-mbstring php5.6-mcrypt php5.6-mysql php5.6-pgsql php5.6-sqlite php5.6-sqlite3 php5.6-zip php5.6-bcmath php5.6-memcached php5.6-gd php5.6-dev pkg-config libcurl4-openssl-dev libedit-dev libssl-dev libxml2-dev xz-utils libsqlite3-dev rsync sqlite3 git curl vim nano tree postgresql-client && apt-get clean && curl -s http://getcomposer.org/installer | php && echo \"export PATH=${PATH}:/var/www/vendor/bin\" >> ~/.bashrc && mv composer.phar /usr/local/bin/composer" did not complete successfully: exit code: 100