is it any possibility to seal the first update of packages for Ubuntu 20.04? Let me explain the problem faced and not found on internet as a solution. Immediately after installing of Ubuntu 20.04 it is recommended to use "apt-get upgrade" to have the latest main packages updated, then installing customs needed packages.
Everything is ok and work, but I want to perform whole these update of packages with download somewhere and to make a CD or DVD for later use packages for updated and installed offline (no internet), to be possible later to install another PC with same release packages even if I will install 2 months later when internet has new releases. So I want to have same installation of release packages anytime later offline.
Is it possible such of thing?