buildx failed with: ERROR: failed to solve: process "/bin/sh -c mkdir -p /etc/privoxy && mkdir -p /var/log/privoxy && cd /tmp/ && VER=$(echo \"${PRIVOXY_VER}\" | sed 's/\\./_/g') && [ \"${PRIVOXY_VER}\" = \"edge\" ] && REF=\"HEAD\" || REF=\"refs/tags/v_${VER}\" && curl -sLJ -o privoxy-${PRIVOXY_VER}-src.tar.gz \"https://www.privoxy.org/gitweb/?p=privoxy.git;a=snapshot;h=${REF};sf=tgz\" && mkdir ./privoxy-${PRIVOXY_VER} && tar xzvf privoxy-${PRIVOXY_VER}-src.tar.gz -C ./privoxy-${PRIVOXY_VER} --strip-components=1 && cd ./privoxy-${PRIVOXY_VER} && autoheader && autoconf && ./configure --prefix=/usr --sysconfdir=/etc --localstatedir=/var --enable-compression --with-openssl --enable-extended-statistics && make && make -s install USER=privoxy GROUP=nogroup && cd / && chown -R privoxy:nogroup /var/log/privoxy && mv /usr/share/doc/privoxy/user-manual/ /tmp/ && rm -rf /usr/share/doc/privoxy/* && mv /tmp/user-manual/ /usr/share/doc/privoxy/ && rename 's/.new//' /etc/privoxy/*.new && apt-get remove -qq -y apt-utils autoconf automake build-essential libssl-dev libpcre3-dev rename zlib1g-dev && apt-get autoremove -y -qq && apt-get clean -y -qq && rm -rf /tmp/* /var/cache/apt/archives/* /var/lib/apt/lists/* /var/tmp/*" did not complete successfully: exit code: 28