docker image history alpine
echo "console.log(\"version imagen v0.2\");" >> index.js
docker image build -t hello:v0.2 .
docker image ls
docker container run hello:v0.2
docker image history hello:v0.2
docker image inspect alpine
docker image inspect --format "{{ json .RootFS.Layers }}" alpine
docker image inspect --format "{{ json .RootFS.Layers }}" hello:v0.2
