Working with docker

Useful Docker commands for managing containers, images, volumes, and system resources.

Debug docker container

List running container
docker ps

Enter the container using bash:
docker exec -it <container_name_or_id> /bin/bash

If bash is not available, try:
docker exec -it <container_name_or_id> /bin/sh

Show logs
docker logs <container_name_or_id>

To exit the container:
 exit

General Docker Information

• docker version: Show Docker version information

• docker info: Display system-wide Docker information

• docker stats: Display a live stream of container(s) resource usage statistics

Container Management

• docker ps: List running containers

• docker ps -a: List all containers (running and stopped)

• docker start <container>: Start one or more stopped containers

• docker stop <container>: Stop one or more running containers

• docker restart <container>: Restart one or more containers

• docker rm <container>: Remove one or more containers

• docker logs <container>: Fetch the logs of a container

• docker exec -it <container> <command>: Run a command in a running container

Image Management

• docker images: List images

• docker pull <image>: Pull an image or a repository from a registry

• docker push <image>: Push an image or a repository to a registry

• docker rmi <image>: Remove one or more images

• docker build -t <name:tag> .: Build an image from a Dockerfile

Volume Management

• docker volume ls: List volumes

• docker volume create <name>: Create a volume

• docker volume rm <volume>: Remove one or more volumes

Network Management

• docker network ls: List networks

• docker network create <name>: Create a network

• docker network rm <network>: Remove one or more networks

System Management

• docker system df: Show Docker disk usage

• docker system prune: Remove unused data

• docker system prune -a: Remove all unused images not just dangling ones

• docker system prune -a --volumes: Remove all unused images and volumes

Resource Cleanup

• docker container prune: Remove all stopped containers

• docker image prune: Remove unused images

• docker volume prune: Remove all unused local volumes

• docker network prune: Remove all unused networks

Docker Compose

• docker-compose up: Create and start containers

• docker-compose down: Stop and remove containers, networks, images, and volumes

• docker-compose ps: List containers

• docker-compose logs: View output from containers

Advanced Commands

• docker inspect <container/image>: Return low-level information on Docker objects

• docker events: Get real time events from the server

• docker top <container>: Display the running processes of a container

Remember to use these commands responsibly, especially those that remove resources. Always ensure you're working in the correct environment before executing destructive commands.