Use programs installed on Docker base image

Question

This is something that's been bugging me for a while, but how come I can't access programs that are installed in my base image in my Docker image?

For example, my base image has make & gcc installed. However, in my current image that I am accessing via docker run, I can't access make or gcc despite having FROM base img . I get bash: make: command not found.

Answer 1

Make sure you are running run command with correct format. E.g.:

docker run -it python:3.4.3-slim python --version

               IMAGE^^^^^^^^^^^^ COMMAND ^^^^^^^^