Practice
Resources
Contests
Online IDE
New
Free Mock
Scaler
Practice
Improve your coding skills with our resources
Contests
Compete in popular contests with top coders
Scaler
Explore Offerings by SCALER

Before you go!

Take this "Docker Cheat Sheet" interview guide with you

Welcome to Interviewbit, help us create the best experience for you!

Currently, You are a:

Few details about your education

College/University *
Enter the name of your college
Branch *
Year of completion *

Few details about your education

College/University *
Enter the name of your college
Branch *
Year of completion *

Few details about your career...

Current Company *
Enter company name *
Experience *

You're all set!

Begin your success journey!

Sign Up using
Full name *
Email *
Password *

By creating an account, I acknowledge that I have read and agree to InterviewBit’s Terms and Privacy Policy .

Welcome back!

Log In using
Email *
Password *

Docker Cheat Sheet

Download PDF


Your requested download is ready!
Click here to download.

Docker is an excellent platform for designing, deploying, and executing programs that rely on containers. Docker allows you to construct a container that contains your program, well any packages or libraries that it relies on, as well as any configuration information. When you managed to make a webpage, you used to have to buy a server, install Linux, build up a LAMP architecture, and then run the program. If your program became famous, you used effective load balancing by adding an extra server to guarantee that it didn't crash due to excessive traffic.

The best thing about open source is whether you get to choose the tech you want to employ to finish a job. Docker engine is suitable for single engineers that want a lightweight, pure environment to run but do not require extensive management.

Docker Community Edition (docker-ce) is a wonderful method to begin with containers if Docker is installed on your system and everyone around you is comfortable with the Docker ecosystem. Because the fight to ensure open standards prevails is continuous, sticking with projects that love and appreciate open source should be a long-term plan for your container solution. Private extras may appear interesting at first, but once you lock your tools to a solution that does not allow for the transfer, you lack your freedom of choice. Containers may be freed if they're used correctly.

In this cheat sheet, we will highlight all the important docker commands that caters to freshers and experienced professionals, so let's move forward.

Crack your next tech interview with confidence!
Take a free mock interview, get instant⚡️ feedback and recommendation💡

Docker Tutorial: Freshers and Experienced

1. Installation of Docker

Command Meaning Syntax
For Windows This command helps you to install Docker on windows. https://download.docker.com/win/stable/InstallDocker.msi
For Linux This command helps you to install Docker on Linux. curl -sSL https://get.docker.com/ | sh
For mac This command helps you to install Docker on mac os. https://download.docker.com/mac/stable/Docker.dmg

2. Docker Registry and Repository

Command Meaning Syntax
Login to a Registry This command helps you log in to your Registry.
docker login
docker login localhost:8080
Logout from a registry: This command helps you log out from your Registry.
docker logout
docker logout localhost:8080
Searching an image By using this docker command you can search any image from your docker.
search nginx
docker search --filter stars=3 --no-trunc nginx
Pulling an Image This command can be used to download a specific image or set of images.
docker image pull nginx
docker image pull eon01/nginx localhost:5000/myadmin/nginx
Pushing an image This command can be used to push a specific image or set of images.
docker image push eon01/nginx
docker image push eon01/nginx localhost:5000/myadmin/nginx

3. Running Containers

Command Meaning Syntax
Command to create a container This command is used to create a container without running
docker container create -t -i eon01/infinite --name XYZ
Command to run a container This command is used to run a container
docker container run -it --name XYZ -d eon01/infinite
Command to rename a container Use this command to rename a container
docker container rename XYZ infinity
Command for removing a container This command is used to remove container in the topic
docker container rm infinite
Update a container This command is used to update container in the topic
docker container update --cpu-shares 512 -m 300M infinite
You can download a PDF version of Docker Cheat Sheet.

Download PDF


Your requested download is ready!
Click here to download.

4. Commands for Starting or Stopping the Container

Command Meaning Syntax
Command for starting a container This command is used for starting a container 
docker container start nginx
Command for stopping a container This command is used for stopping a container
docker container stop nginx
Command for restarting the container This command is used for restarting a container
docker container restart nginx
Command for pausing the container This command is used for pausing a container
docker container pause nginx
Command for unpausing the container This command is used for unpausing a container in the docker 
docker container unpause nginx
Command for Blocking a container This command is used for blocking a container in the docker 
docker container wait nginx
Sending a SIGKILL This command is used for Sending a SIGKILL in the docker 
docker container kill nginx
Command for sending another signal This command is used for for sending another signal
docker container kill -s HUP nginx
Command for Connecting to an Existing Container We can use this command for Command for Connecting to an Existing Container
docker container attach nginx

5. Commands for Obtaining Container Information

Command Meaning Syntax
Fetching information From Running Containers We can fetch  information from running container by using this command
docker ps

Or 

docker container ls
Command for fetching about every container This command for fetching about every container
docker container ls -a

Or

docker ps -a
Command for container log We can use this command to see the container log
docker logs infinite
Command for ‘tail -f’ Containers’ Logs With this command Container isn't running in the foreground, and if there isn't anything running in the foreground, Docker closes automatically.
docker container logs infinite -f

Command for Inspecting Containers


 

This is the command use for inspecting containers
docker container inspect infinite

docker container inspect --format '' $(docker ps -q)
Command for Containers Events To obtain real-time events from the server, use docker events.
docker system events infinite
Command for Public Ports Use this command for finding a public port
docker container port infinite
Command for Running Processes We can use this commands for displaying the running processes in the container
docker container top infinite
Command for Container Resource Usage It displays a live stream of resources usage statics  for containers
docker container stats infinite
Commands for Inspecting changes to files or directories on a container’s filesystem This command is used for inspecting changes to files or directories on a container’s filesystem 
docker container diff infinite

6. Commands for Managing Images

Command Meaning  Syntax 
Commands for listing images This command is used to listing images 
docker image ls
Command for Building images From the current directory's Dockerfile This command is used for building from the current directory’s dockerfile 
docker build 
Command for Building images From a GIT remote repository This command is used Building images command Using a remote GIT repository
docker build github.com/creack/docker-firefox
Commands for tagging and building This command for tagging and building.
docker build -t eon/infinite 
Specifying the Build Context while creating a Dockerfile This is use to Build an image from a Dockerfile
docker build -f myDockerfile
Creating a Dockerfile from a URL It wil help to create a dockerfile with a specific URL. 
curl example.com/remote/Dockerfile | docker build -f - 
Command for removing image This command is used to removing a7n image 
docker image rm nginx
Using a File or the Normal Input Stream to Load a Tarred Repository Use STDIN or a tar archive to load an image.
docker image load < ubuntu.tar.gz

docker build -f myOtherDockerfile 
Image Saving to a Tar Archiveard Input Stream It is used Save one or more images to a tar archive
docker image save busybox > ubuntu.tar
Showing the History of an Image This command will let know the history of the image inside the docker
image history
Making an Image Out of a Container This command will help you to take an image out of the container
docker container commit nginx
Command for image tagging We can use this command for image tagging
docker image tag nginx eon01/nginx
Command for pushing an image We can push any image through this command
docker image push eon01/nginx

7. Commands for Networking

Command Meaning Syntax 
Command for overlay network This is used to establish a distributed network between many Docker daemon hosts.
docker network create -d overlay MyOverlayNetwork
Command for Bridge network To establish container test1 to bridge demo-bridge, type docker network connect demo-bridge test1.
docker network create -d bridge MyBridgeNetwork
Command for removing a network This command s used to remove an overlay network 
docker network rm MyOverlayNetwork
Command for network listing This command is used to listing the overlay networks
docker network ls
Command for Getting Information About a Network We can get information about an overlay network with the help of this command
docker network inspect MyOverlayNetwork
Command for Connecting a Running Container to a Network By using this command we can connect a container to network
docker network connect MyOverlayNetwork nginx
Command for Connecting a Container to a Network When it Starts When the container starts we can use this command to connect a container to network
docker container run -it -d --network=MyOverlayNetwork nginx
Command for Disconnecting a Container from a Network We can use this Command for disconnecting a container from network
docker network disconnect MyOverlayNetwork nginx
Command for Exposing Ports We can expose the empty ports using this command
EXPOSE <port_number>

8. Commands for Cleaning Docker

Command  Meaning  Syntax 
Command for Removing a Running Container We can remove a running container by using this command
docker container rm nginx
Command for Removing a Container and its Volume We  can use this command for removing the container and the things inside it
docker container rm -v nginx
Command for Removing all Exited Containers We can use this command for removing all the exited containers
docker container rm $(docker container ls -a -f status=exited -q)
Command for Removing All Stopped Containers We can remove all the stopped containers by using this command
docker container rm `docker container ls -a -q`
Command for Removing a Docker Image This command is used fr removing a docker image 
docker image rm nginx
Command for Dangling Images We can dangle the images with this command
docker image rm $(docker image ls -f dangling=true -q)
Command for Removing all Images We can remove all the image in the docker by using this commands
docker image rm $(docker image ls -a -q)
Commands for Delete all Untagged Images We can delete all the untagged images with the use of this command
docker image rm -f $(docker image ls | grep "^<none>" | awk "{print $3}")
Command for Stopping & Removing all Containers For stopping and removing all the container we can use this command
docker container stop $(docker container ls -a -q) && docker container rm $(docker container ls -a -q)
Command for Removing Dangling Volumes We can remove all the dangling volumes by using this command
docker volume rm $(docker volume ls -f dangling=true -q)
Command for removing all unneeded (containers, images, networks and volumes) This command is use to remove the unnecessary thing 
docker system prune -f
Command for Clean all We cam use this command for cleaning everything in the docker
docker system prune -a

Conclusion

You should have a solid knowledge of what Docker is and how it operates by this point. Docker's finest feature is cooperation. Docker images may be uploaded to a repo and then downloaded to any other server to execute containers. Furthermore, the Docker hub has hundreds of images developed by users, which you may download down to your servers depending on your specific application. It is also often used throughout container orchestration technologies such as Kubernetes.

Docker is one of the greatest production technologies available today, and its demand is expanding rapidly. It is considered ideal for larger businesses, and because it is open-source, it is a versatile platform that can be used to construct a wide range of applications.

References and Resources

Docker MCQ

1.

Which Dockerfile instruction specifies the base image to be used?

2.

What is a decent docker exec analogy?

3.

When you load Docker runtime on a Docker host, which one of the following network interfaces is created?

4.

Which of the below best describes the connection between a Docker image and a Docker container?
 

5.

Which Docker CLI commands should be used in what order to produce a Docker image?

6.

Which command provides access to the live output of processes operating within a container?

7.

What does the CMD instruction do if the ENTRYPOINT command is also used?

8.

Which Docker component interacts with the kernel primitives needed to generate containers?

Get Placed at Top Product Companies with Scaler Know More 
Get Placed at Top Product Companies with Scaler Know More 
Get Placed at Top Product Companies with Scaler
Sat transparent 640a34d454880bf68e3bfdf33f2389f2214043f59ad18b4c7f7b114e834fb257.svg

Point markers b3add1cc88e4996b2df6e0aedb9f0d1b65fa73c51b7ada8fbee3895a2aa11802.svg Personalised feedback report with solutions
Point markers b3add1cc88e4996b2df6e0aedb9f0d1b65fa73c51b7ada8fbee3895a2aa11802.svg Real life Interview Questions
Point markers b3add1cc88e4996b2df6e0aedb9f0d1b65fa73c51b7ada8fbee3895a2aa11802.svg Identify exact topics to improve

Your feedback is important to help us improve.
Free Mock Assessment
Fill up the details for personalised experience.
All fields are mandatory
Current Employer *
Enter company name *
Graduation Year *
Select an option *
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
Phone Number *
OTP will be sent to this number for verification
+91 *
+91
Change Number
Phone Number *
OTP will be sent to this number for verification
+91 *
+91
Change Number
Graduation Year *
Graduation Year *
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
*Enter the expected year of graduation if you're student
Current Employer *
Company Name *
Please verify your phone number
Edit
Resend OTP
By clicking on Start Test, I agree to be contacted by Scaler in the future.
Already have an account? Log in
Free Mock Assessment
Instructions from Interviewbit
Start Test