Autogenerate Dockerfile from ubuntu image

I was learning docker to use in one of my projects. I kept installing packages, finally created required Ubuntu image. Suddenly thought it would be cool if I can generate Dockerfile like pip freeze > requirements.txt. sudo docker run ubuntu dpkg --get-selections | awk '{print $1}' > base.list && sudo docker run pyextra dpkg --get-selections | awk '{print $1}'> pyextra.list && sort base.list pyextra.list | uniq -u > op.list && python -c "f = open('Dockerfile', 'w');f. [Read More]