buildx failed with: ERROR: failed to solve: process "/bin/sh -c curl -fL -o optipng.tar.gz \"https://sourceforge.net/projects/optipng/files/OptiPNG/optipng-${PNG}/optipng-${PNG}.tar.gz\"; tar xvzf optipng.tar.gz; ls -l; cd optipng-${PNG}/ && ./configure && make && make install" did not complete successfully: exit code: 1