How to install “ifconfig” command in my ubuntu docker image?

Question

I\'ve just installed ubuntu docker image, when I execute \"ifconfig\" it says there\'s no such command, I tried apt-get install by there\'s no package named \"ifconfig\"(I can i

Answer 1

From within a Dockerfile something like the following should do the trick:

RUN apt-get update && \
     apt-get install -y net-tools

From memory it's best practice to combine the update and the package installation lines to prevent docker caching the update step which can result in out-dated packages being installed.

Installing it via the CLI or a shell script:

apt-get update && apt-get install net-tools