None of these problems would exist if developers packaged their software and the configuration in operating system packages. Then it’s just a matter of plugging

None of these problems would exist if developers packaged their software and the configuration in operating system packages. Then it’s just a matter of plugging those into their OS’s respective provisioning technology. I suspect the issue isn’t that, but lack of shell scripting expertise. In the end one has to shell script anyway, even inside of systems like Docker, so prolonging the inevitable is irrational.