CPM requires download_installation_scripts.sh (hereinafter referred to as an import script) as a CPM import script.
When CPM calls installation scripts, CPM sets a environment value of $CPM_CACHE_DIR.
This environment value is passed as relative path so that the Docker container can solve the path from the container's root.
downloads installation scripts in the $CPM_CACHE_DIR.
This script must download all of depending scripts.
For example, download_archive.sh, download_src.sh, install_archive.sh, install_src.sh, is_installed.sh, packages_cpm.txt and the other files of depending files.
NOTE: As a general rule, do not use scripts under the cpm directory and download all necessary scripts to avoid the effects of unexpected file changes.
See github.com/admiswalker/CPM_libExample_to_IMPORT/ ~ /download_installation_scripts.sh.