I find RVM much easier to manage than docker, for local development. To deploy on servers, it depends. Deploying with Capistrano to one server is easier than bu

I find RVM much easier to manage than docker, for local development. To deploy on servers, it depends. Deploying with Capistrano to one server is easier than building a docker container and push / pull it. For cloud / serverless environments... the number of companies that really need that is surprisingly low. Most businesses are small and are well served by a single VPS.