如果离线 .deb 程序及其依赖项在本地存储库中不存在，如何安装它们

Question

这是我的bash 脚本（还有其他类似这里和这里)：

#!/usr/bin/env bash
pkgs='main-program dependency1 dependence2'
if ! dpkg -s $pkgs >/dev/null 2>&1; then
  wget main-program.deb && apt -y install ./main-program.deb
  wget dependency1.deb && apt -y install ./dependency1.deb
  wget dependency2.deb && apt -y install ./dependency2.deb
fi

问题：我该如何修复我的脚本以安装主程序.deb，并且当我需要它的依赖项时（如果未安装），在本地存储库中查找它们（对于 ubuntu 20.04）？

注意：大多数主要程序依赖项.deb不再位于官方 ubuntu 20.04 存储库中，因此无法使用apt-get install package（只能使用apt-get install ./package.deb或dpkg -i package.deb）安装

更新：

此解决方案据称解决了离线安装的问题。也就是说，主程序在/var/cache/apt/archives/文件夹中而不是在互联网上寻找所需的依赖项

#!/usr/bin/env bash
pkgs='main-program'
path_deb="/var/cache/apt/archives/"
if ! dpkg -s $pkgs >/dev/null 2>&1; then
  cat dependencies.txt | xargs -n 1 -P 2 wget -q -nc -P $path_deb
  dpkg -i $path_deb/main-program.deb
  apt-get install -f
fi

我也尝试过：

dpkg --force-depends -i /var/cache/apt/archives/main-program.deb

内容dependencies.txt

https://old-releases.ubuntu.com/ubuntu/pool/universe/example/dependency1.deb
https://old-releases.ubuntu.com/ubuntu/pool/universe/example/dependency2.deb
https://old-releases.ubuntu.com/ubuntu/pool/universe/example/main-program.deb

但失败了：

Unpacking main-program ...
dpkg: dependency issues prevent main-program configuration:
  main-program depends on dependency1; However:
   The `dependency1' package is not installed.
  main-program depends on dependency2; However:
   The `dependency2' package is not installed.
Errors were encountered while processing:
  main-program
Reading package list ... Done
Creating dependency tree
Reading status information ... Done
Fixing dependencies ... done
The following packages WILL be REMOVED:
   main-program
0 updated, 0 new will be installed, 1 to remove, and 0 not updated.
1 not fully installed or removed.
672 kB will be released after this operation.
do you wish to continue? [Y / n]