Docker newbie here, I want to create a new image based on another image I pulled from Dockerhub which by itself works great but I wanted to add some tools to it. My Dockerfile is very small and it already fails:
FROM aunsbjerg/docker-kinetis-design-studio RUN echo "hello world!" RUN apt-get update && apt-get install -y apt-utils
The hello world line by itself seems to work fine but as soon as I try to install any program, it fails with:
The command '/bin/sh -c apt-get update && apt-get install -y apt-utils' returned a non-zero code: 100
Why is this and how do I get past it?