Essential Docker and Docker-Compose Commands

I spent some of today trying to work out why a Docker image that I was using did not work correctly.

This is the most useful command for debugging a docker image:

docker run -it ubuntu /bin/bash

This is based upon the ubuntu image but feel free to replace it with whatever you are trying to debug.

You can do the same with a docker-compose

docker-compose run --entrypoint /bin/bash

I am now looking at how to run a gradle build inside a docker container and then extract the log files. It will be especially useful to be able to view the log files. It may be possible to add a web server to view them.

It’s now also possible to stand up a Jenkins server on your dev machine to test Jenkinsfiles before deploying them to the build server.

docker run -p 8080:8080 -p 50000:50000 jenkins/jenkins:lts

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