kjleng / rails-builder

rails-builder

This docker image allows you to run the command rails new without having Ruby or Rails installed on your host machine. You can choose the ruby version by passing in the build args RUBY_VER to Dockerfile. The docker image also adds the Postgres dependency since it is a fairly common database option for many Rails projects.

usage

docker build --build-arg RUBY_VER=<RUBY_VERSION> -t rails-builder https://github.com/kjleng/rails-builder.git#main && docker run -it --rm -v $PWD:/app rails-builder rails new <PROJECT_NAME> --api --database=postgresql

For convenience, I created a function in my .zshrc

function rails-new() {
   docker build --build-arg RUBY_VER="$1" -t rails-builder https://github.com/kjleng/rails-builder.git\#main 
   docker run -it --rm -v $PWD:/app rails-builder rails new "$2" --api --database=postgresql
}

and I can call the function anywhere. Example

rails-new 3.1.4 my-project