Docker.md

Introduction

This document provides a comprehensive guide to commonly used Docker commands for managing images, containers, and Docker Hub interactions efficiently.

My docker-hub example

Docker Version

Check the installed Docker version:

docker version

Building Docker Images

Create a Docker image from a Dockerfile:

docker build -t <image_name> .

Listing Docker Images

View all available images:

docker images

Managing Containers

Listing Running and All Containers

# List only running containers
docker ps

# List all containers (including stopped ones)
docker ps -a

Running Containers

# Run an image in a container
docker run <image_name>

# Run an image in the background (detached mode)
docker run -d <image_name>

Starting and Stopping Containers

# Start a stopped container
docker start <container_ID>

# Stop a running container
docker stop <container_ID>

Removing Containers

# Remove a stopped container
docker rm <container_ID>

Managing Docker Images

Removing Images

# Remove an image
docker rmi <image_name>

Tagging Images

# Add a tag to an image
docker tag <local_image:tagname> <docker_hub_name/repo:tagname>

Pushing and Pulling Images

# Push an image to Docker Hub
docker push <docker_hub_name/repo:tagname>

# Pull an image from Docker Hub
docker pull <docker_hub_name/repo:tagname>

Cleaning Up Unused Resources

Removing Unused Docker Resources

# Remove unused containers, networks, and images
docker system prune

# Remove all unused images, not just dangling ones
docker system prune -a

Viewing Logs

# View logs of a running container
docker logs <container_ID>

# Follow live logs
docker logs -f <container_ID>

Executing Commands in Running Containers

# Open an interactive Bash session inside a running container
docker exec -it <container_ID> bash

Using Docker Compose

# Start all services defined in docker-compose.yml
docker-compose up

# Stop all services defined in docker-compose.yml
docker-compose down

Conclusion

This guide serves as a quick reference for essential Docker commands to streamline container management and image handling. Ensure to adapt these commands based on specific project requirements.