In the days before Docker what we would use is CentOS with custom scripts using Anaconda[1]. You start with the base system and then add on whatever you need. You can also configure /etc however you need. The output is an ISO of your own custom Linux distribution.
One neat thing about Anaconda is you can add a provision script that runs on initial boot. So if you need to "bake" in your app but leave a certain amount of configuration for install-time, that's the way you do it.
In the days before Docker what we would use is CentOS with custom scripts using Anaconda[1]. You start with the base system and then add on whatever you need. You can also configure /etc however you need. The output is an ISO of your own custom Linux distribution.
One neat thing about Anaconda is you can add a provision script that runs on initial boot. So if you need to "bake" in your app but leave a certain amount of configuration for install-time, that's the way you do it.
[1] https://access.redhat.com/documentation/en-us/red_hat_enterp...