Docker is a powerful tool for containerization, and knowing the right commands can significantly improve your workflow. Below is a list of commonly used Docker commands along with their descriptions and examples.
You can find many useful docker related blogs here.
Basic Commands
1. Check Docker Version
docker --versionDisplays the installed Docker version.
2. Log in to Docker Hub
docker loginAuthenticates you to Docker Hub.
3. Log out from Docker Hub
docker logoutLogs you out from Docker Hub.
Image Management
4. List Docker Images
docker imagesDisplays all locally available Docker images.
5. Pull an Image from Docker Hub
docker pull <image_name>Downloads a Docker image from Docker Hub.
6. Remove an Image
docker rmi <image_id>Deletes a specific Docker image from your local machine.
7. Tag an Image
docker tag <image_id> <repository>:<tag>Assigns a tag to an existing image.
Container Management
8. List Running Containers
docker psDisplays all active containers.
9. List All Containers (including stopped ones)
docker ps -aShows all containers, running or stopped.
10. Run a Container
docker run <image_name>Creates and starts a new container from an image.
11. Stop a Running Container
docker stop <container_id>Stops a running container.
12. Restart a Container
docker restart <container_id>Restarts a running or stopped container.
13. View Container Logs
docker logs <container_id>Displays the logs of a running container.
14. Remove a Container
docker rm <container_id>Deletes a stopped container.
Docker Compose Commands
15. Start Services Defined in docker-compose.yml
docker-compose upStarts containers as defined in the docker-compose.yml file.
16. Stop and Remove Containers, Networks, and Volumes
docker-compose downStops and removes all resources created by docker-compose up.
17. List Running Compose Services
docker-compose psShows the status of containers managed by Docker Compose.
Advanced Commands
18. Execute a Command Inside a Running Container
docker exec -it <container_id> <command>Runs a command inside an active container.
19. Show Container Resource Usage
docker statsDisplays real-time resource usage statistics of running containers.
20. Show Container Processes
docker top <container_id>Lists processes running inside a container.
21. Prune Unused Docker Resources
docker system pruneRemoves unused containers, networks, and images to free up space.
By learning these Docker commands, you can effectively manage images, containers, and services. Whether you're just getting started with Docker or already an experienced user, keeping these commands handy will help streamline your workflow!