Docker Commands

Action	Command
DOCKERFILE	# Dockerfile instructions are used to create (custom) Docker Images. # Steps to create a Dockerfile. STEP-1: Navigate to your project directory. cd path/to/your/project STEP-2: Create & Edit your Dockerfile (You can also use your favourite editor) Important: No file extenstion required vi Dockerfile STEP-3: Example instructions to a Dockerfile Important: Below example runs an HTML project in docker container # Base image. FROM nginx:alpine # Copy all HTML project files to the container. COPY . /usr/share/nginx/html # Expose container ports. EXPOSE 8181 STEP-4: Build your custom image using this Dockerfile and run (See Build Image & Run Image section) docker build -t <image_name> .
IMAGES	# List Images. docker images docker image ls # Pull Images from docker-hub, this will save image to our system [local docker]. docker pull <image>:<tag> docker pull hello-world docker pull ubuntu:18.04 # Get Image detailed information. docker image inspect <image>:<tag> docker image inspect hello-world Note: Docker will consider latest tag if you do not mention the tag. Also, ‘docker pull ubuntu’ instructs docker to pull an image named 'ubuntu' from the official Docker Hub. This is simply a shortcut for the longer docker pull docker.io/library/ubuntu command. Generally, you can find images here https://hub.docker.com/_/<image>.
SEARCH IMAGES	# Search docker-hub images. docker search <string> docker search busy # With minimum 5 stars. docker search --filter stars=5 busy Note: This will result image name or tag name starting with given string.
RUN IMAGES	# Run Image in a new Container. docker run <image> docker run busybox # Run Image and remove Container once Container exixts. docker run --rm <image> docker run --rm busybox Run container in background and print container ID -d --detach to detach terminal so that you can further use your terminal otherwise, it has ‘Nginx is running...’ Publish a container's port(s) to the host -p tcp works on 80, 8888 will be recognised as tcp 80 -—name container name -t Allocate a pseudo-TTY $ docker run -p 8888:80 prakhar1989/static-site # Container terminal docker run -it busybox sh exit command to exit
CONTAINERS	# List running container. docker container ls docker ps # List all containers including running and exited. docker container ls -a docker ps -a # List (only IDs) of containers, quite mode. docker container ls -aq docker ps -aq # Stop running containers. docker stop <container_id> docker stop <container_id1> <container_id2> # Start stopped containers. docker start <container_id> docker start <container_id1> <container_id2> # Restart containers. docker restart <container_id> docker restart <container_id1> <container_id2> # Delete container. docker rm <container_id> docker rm <container_name> docker rm <container_id1> <container_id2> #WARNING! This will remove all stopped containers. docker container prune # Delete containers (forcefully). docker rm -f <container_id> # Delete all exited containers. docker rm $(docker ps -aq status=exited) # Rename container. docker rename <container_name> <new_name>
INTERACT WITH CONTAINERS	# Get terminal of container. docker exec -it <container_id> /sh docker exec -it <container_id> /bin/bash
HOST & CONTAINER	# Copy file from Host to Container. docker cp <container_id>:/path/to/source /path/to/destination # Copy file from Container to Host. docker cp /path/to/source <container_id>:/path/to/destination
VOLUME	# Inspect Volume. docker volume inspect <volume_name> # Mount all volumes used in C1 to C2. docker run -it —name <container_id2> —volumes-from <container_id1> bash

♪ ♫  Finding this helpful? Please put in comments what more could be added here..