Most essential docker commands that helps every DevOps people.#

Docker makes it easy to package and run applications in any environment by using containers. Knowing a few essential Docker commands can help you create, manage, and troubleshoot these containers effortlessly. In this guide, we’ll cover the must-know commands to get you started with Docker quickly and efficiently. Let’s dive in!

1. docker build -t my-app . - Build a docker image
2. docker run -dit -p 80:80 my-app - Run a container in detached mode in port 80
3. docker ps - List all the running containers
4. docker logs my-app - View logs of a specific container
5. docker exec -it my-app /bin/bash - Access container shell
6. docker push my-app:latest - Upload image to docker registry
7. docker pull my-app:latest - Download image from docker registry
8. docker system prune - Delete unused containers, images, and volumes
9. docker volume create my-volume - Create a persistent volume on host
10. docker volume ls - List all persistent volumes
11. docker network create my-network - Create a custom network on host
12. docker volume ls - List all the networks created and configured
13. docker network connect my-network my-app - Connects the container to the custom network
14. docker-compose up -d - Run the compose file that contains multi-container configurations
15. docker-compose down - Stop the compose file that contains multi-container configurations
16. docker inspect my-app - View the container details
17. docker image history my-app - View the docker image build history
18. docker stats - Monitor container resource utilization on host level
19. docker diff my-app - See changes made in a container
20. docker cp my-app:/file/path/within/container /host/path/target - Copy files from container to host machine
21. docker update --restart=always my-app - Update container to auto-restart on whenever it stops
22. docker tag my-app:v1 my-app:v2 - Rename the docker image and it’s version
23. docker login my-registry.azurecr.io - Manually authenticate the Azure container registry
24. docker run --rm -it my-app /bin/bash - Run a container and remove it on exit
25. docker run --name my-db -e POSTGRES_PASSWORD=mysecretpassword -d postgres - Run a container with environment variables

Conclusion

This is it! You’ve learnt the basic essential docker commands. If you have any doubts/issues/errors with the above contents, feel free to contact me. Cheers, Happy learning.