[Doc] Update Docker image build info in README.md
[Doc] Update Docker image build info in README.md

ljharb/nvm,edwmurph/nvm,creationix/nvm,creationix/nvm,PeterDaveHello/nvm,PeterDaveHelloKitchen/nvm,evocateur/nvm,ljharb/nvm,evocateur/nvm,edwmurph/nvm,PeterDaveHello/nvm,PeterDaveHelloKitchen/nvm