I have created a couple different directories on my host machine as I try to learn about Docker just to keep my dockerfiles organized. My Dockerfile I just ran looks like this:
FROM crystal/centos
MAINTAINER crystal
ADD ./rpms/test.rpm ./rpms/
RUN yum -y --nogpgcheck localinstall /rpms/test.rpm
My actual rpm is only 1 GB. But when I try to do sudo docker build -t="crystal/test" ., I get sending build context to Docker daemon 3.5 GB. Is there something else that I’m unaware of as you continue to build Docker images? Is my memory accumulating as I build more images in my other directories on my host machine?