Docker Cheatsheet

Docker Cheat Sheet

Basic Docker Commands

1. Getting Help:

docker --help
docker command --help

2. Version:

docker --version
docker version

Working with Docker Images

1. Pull an Image:

docker pull [image_name]

2. List Images:

docker images

3. Remove an Image:

docker rmi [image_name_or_id]

4. Build an Image:

docker build -t [image_name] [path_to_dockerfile]

5. Tag an Image:

docker tag [image_id] [new_image_name]:[tag]

Working with Docker Containers

1. Run a Container:

docker run [options] [image_name]

Common options:

• -d: Run container in background (detached mode)
• -it: Run container in interactive mode with a TTY
• --name: Assign a name to the container
• -p: Publish a container’s port(s) to the host

2. List Running Containers:

docker ps

3. List All Containers (including stopped):

docker ps -a

4. Stop a Running Container:

docker stop [container_id_or_name]

5. Start a Stopped Container:

docker start [container_id_or_name]

6. Remove a Container:

docker rm [container_id_or_name]

7. Remove All Stopped Containers:

docker container prune

Container Information and Management

1. Inspect a Container:

docker inspect [container_id_or_name]

2. View Container Logs:

docker logs [container_id_or_name]

3. Access a Running Container:

docker exec -it [container_id_or_name] /bin/bash

Docker Networks

1. List Networks:

docker network ls

2. Create a Network:

docker network create [network_name]

3. Inspect a Network:

docker network inspect [network_name]

4. Connect a Container to a Network:

docker network connect [network_name] [container_name]

5. Disconnect a Container from a Network:

docker network disconnect [network_name] [container_name]

Docker Volumes

1. List Volumes:

docker volume ls

2. Create a Volume:

docker volume create [volume_name]

3. Inspect a Volume:

docker volume inspect [volume_name]

4. Remove a Volume:

docker volume rm [volume_name]

5. Remove All Unused Volumes:

docker volume prune

Docker Compose

1. Start Services:

docker-compose up

2. Start Services in the Background:

docker-compose up -d

3. Stop Services:

docker-compose down

4. View Service Logs:

docker-compose logs [service_name]

Dockerfile Commands

1. Basic Syntax:

# Use a base image
FROM [base_image]

# Set environment variables
ENV [key]=[value]

# Copy files from host to container
COPY [source] [destination]

# Set the working directory
WORKDIR [path]

# Run commands in the container
RUN [command]

# Expose ports
EXPOSE [port]

# Define the command to run when the container starts
CMD ["executable", "param1", "param2"]

# Alternative to CMD, more flexible
ENTRYPOINT ["executable", "param1", "param2"]

This cheat sheet covers common Docker commands and practices to help you get started and manage your Docker environments effectively.