Running the server

When I attempt to run the server command. I get this error.

docker: Error response from daemon: OCI runtime create failed: container_linux.go:370: starting container process caused: exec: " ": executable file not found in $PATH: unknown.
ERRO[0000] error waiting for container: context canceled

I got past that error and now am seeing: docker run -p 3000:3000 railsapp bin/rails s -b
=> Booting Puma
=> Rails application starting in development
=> Run bin/rails server --help for more startup options
/usr/local/bundle/gems/webpacker-5.2.1/lib/webpacker/configuration.rb:99:in `rescue in load’: Webpacker configuration file not found /usr/src/app/config/webpacker.yml. Please run rails webpacker:install Error: No such file or directory @ rb_sysopen - /usr/src/app/config/webpacker.yml (RuntimeError)