Docker - Commands.md

Docker Commands

Basic Docker Commands

View Docker Version and Info

• docker --version check docker version
• docker info display system-wide information

Images

• List of all images

docker images

• Pull an image from Docker Hub

# Skeleton
docker pull [image_name]:[tag]

# Example
docker pull nginx:alpine

• Build an image from a Dockerfile

# Skeleton
docker build -t [your_image_name]:[tag] .

# Example
docker build -t myapp:latest .

• Remove an image

# Skeleton
docker rmi [image_name]:[tag]

# Example
docker rmi nginx:alpine

Containers

• List all running containers

docker ps

• Run a container (detached mode with port mapping)

# Skeleton
docker run -d -p [host_port]:[container_port] [image_name]:[tag]

# Example
docker run -d -p 8080:80 nginx:alpine

• Start a stopped container

docker start [container_id_or_name]

• Stop a running container

docker stop [container_id_or_name]

• Remove a stopped container

docker rm [container_id_or_name]

• Remove all stopped containers

docker container prune

Interacting with Containers

• View the logs of a container

docker logs [container_id_or_name]

• Execute a command in a running container

docker exec -it [container_id_or_name] [command]

• Execute a command in a running container

docker exec -it [container_id_or_name] [command]

# Example (open a shell in the container):
docker exec -it [container_id_or_name] /bin/bash