Docker CLI Bash completion on MacOS
Docker CLI tool has many commands. If you are also managing a large number of containers, images and networks you will find yourself going back and forth to remember all names, identifiers and parameters. To get some help in this task we can use bash-autocompletion so it does all the magic for us when we push the "tab" key.
First, install bash-completion
If you have homebrew installed it is really easy, just do the following:
brew install bash-completion
If you don't have brew, please follow the instructions in brew homepage.
Second, add docker completion
They are already installed with Docker for Mac. So, let's link them in:
cd /usr/local/etc/bash_completion.d ln -s /Applications/Docker.app/Contents/Resources/etc/docker.bash-completion ln -s /Applications/Docker.app/Contents/Resources/etc/docker-machine.bash-completion ln -s /Applications/Docker.app/Contents/Resources/etc/docker-compose.bash-completion
Third, configure your bash_profile
Add the following to your use's .bash_profile:
if [ -f $(brew --prefix)/etc/bash_completion ]; then . $(brew --prefix)/etc/bash_completion fi
That piece of code will load all the profiles stored in the previous directory. That means that our "docker" auto-completion code will be enabled.
Fourth, and final step, test it
Just write docker container create and press tab twice to get the auto-completion. No need to remember or check the names of the images you have anymore :)
$ docker container create [tab tab] alpine debian httpd mysql nginx:latest ubuntu:14.04 alpine:latest debian:latest httpd:latest mysql:5.6 percona ubuntu:latest centos elasticsearch mongo mysql:latest percona:latest ubuntu:trusty centos:7 elasticsearch:2 mongo:latest nginx ubuntu