ubuntu 20.4 code example
Example: libpng12.so.0 ubuntu 18.04
wget -q -O /tmp/libpng12.deb http://mirrors.kernel.org/ubuntu/pool/main/libp/libpng/libpng12-0_1.2.54-1ubuntu1_amd64.deb
dpkg -i /tmp/libpng12.deb
rm /tmp/libpng12.deb
wget -q -O /tmp/libpng12.deb http://mirrors.kernel.org/ubuntu/pool/main/libp/libpng/libpng12-0_1.2.54-1ubuntu1_amd64.deb
dpkg -i /tmp/libpng12.deb
rm /tmp/libpng12.deb