

Correct, not all containers are for services. I would never say that docker is superior. I would however say that containers are (I can be pedantic too). They’re version-controlled, they come with the correct dependencies, etc… There are many reasons why developing with containers is superior and I’m sure you’re aware of them already. Everyone is moving to do exactly that. There are always edge cases, but those are few and far between these days.
I literally get paid to do this type of work and there is no way for me to be an expert in all the services that our platform runs. Again, that’s kind of the point. Let the person who writes the container be the expert. I’ll provide the platform, the maintenance, upgrades, etc… the developer can provide the expertise in their app.