Day 3/40 - Multi Stage Docker Build - Docker Tutorial For Beginners - CKA Full Course 2024

[@krupakarreddy8845]

Great stuff! I would like to provide minimum of 5 best practices of writing dockerfiles and builing images. 1- run the containers as USER (user instruction) 2- make the docker images very light weighted as much as possible 3- use cache during build the image, hence it saves build time. For eg. use docker build tag . --cache-from 4- if we have any environment variables that are sensitive, mount them as secrets. 5- we can also mount cache inside dockerfile as well to reduce build times. and append multiple RUN instructions as single RUN instruction to reduce the layers for size reducing.

[@TechTutorialswithPiyush]

This is amazing! thank you for sharing

[@niksojitra]

Your dedication to releasing the video as promised, despite not feeling well, is truly commendable and greatly appreciated.

[@TechTutorialswithPiyush]

Thank you so much! No excuses for commitment :)

[@chennareddy4618]

thanks for sharing sir :)

[@TechTutorialswithPiyush]

Welcome!

[@nope-ms4rx]

Another one crushed and more success is heading your way. Day by day it will snowball into something much bigger. You are the epitome of what a mentor should be.

[@TechTutorialswithPiyush]

Thank you so much! I cannot do anything without the support of everyone, I am glad to have such a supportive community❤️

[@Enroll2Upskill]

Lesson learn today no excuses even if you are suffering from cold and throat infection. Learning is inspiring now ! 😊👏

[@TechTutorialswithPiyush]

Right! I committed to myself to record 1-2 videos every day for 30 days continuously. I am proud of myself for sticking to the plan.

[@Enroll2Upskill]

@@TechTutorialswithPiyush Commitments to others are easy to complete but self commitments are difficult. It shows your discipline and dedication. Love and best wishes from @Enroll2Upskill

[@TechTutorialswithPiyush]

@@Enroll2Upskill Thank you once again ❤️

[@varunjoshi4410]

Appreciate you taking out time and creating this series.

[@TechTutorialswithPiyush]

Welcome :)

[@mike4485]

I was very much confused with this.. now multistage docker build concept got clarified.. Thank you So much 😊

[@TechTutorialswithPiyush]

Awesome! Super happy to know that

[@RaviKumar-fw1di]

Awesome session, very well explaind easy to understand people with zero knoweldge ! Thank you Piyush ....

[@TechTutorialswithPiyush]

My pleasure

[@shashikantdivekar7839]

Great video. Very informative and concise. You are providing lot of knowledge and in an easy to understand way. GEAT WORK! Thank you.

[@TechTutorialswithPiyush]

It means a lot! Thank you so much

[@SZTC]

Best series for CKA.

[@TechTutorialswithPiyush]

Thank you

[@DAEC_KAkash]

the way you are explaining that is fully easy to understand bro

[@TechTutorialswithPiyush]

Glad to know that bro! Thank you

[@bhanubisht8]

nice vide

[@TechTutorialswithPiyush]

Thanks

[@6699anish]

Thanks a lot for presenting this much knowledge in an easier and simplified manner...

[@TechTutorialswithPiyush]

You're welcome

[@girishk1142]

point to point -- no waste or unnecessary explanations, saving a lot of time for us. 😀 Thank you.

[@TechTutorialswithPiyush]

Glad you found it helpful ☺️

[@rowervem]

this is great. Your effort is so much appreciated

[@TechTutorialswithPiyush]

You're most welcome

[@AshokKumar-nh3wb]

Thank You for the sharing knowledge. Please continue.

[@TechTutorialswithPiyush]

Thank you! Feel free to start the next video.

[@Shubhamgourtech]

Piyush bhai just wanted to say a thank you for creating this playlist after coming from office i really have very less time for some productive work but this series is both a roadmap and a new journey for me thanks for it and i really appreciate your hardwork behind making this series!

[@TechTutorialswithPiyush]

This means a lot! Thank you so much for the amazing feedback.

[@AtulSingh-lr1bf]

Hi piyush thank you very much for making this series can you please make for monitoring tool also

[@jalandharbehera99]

the way you are explaining that is fully easy to understand bro🙏

[@TechTutorialswithPiyush]

That's my goal 💪🚀

[@sangativamsikrishna1691]

Thanks for the most useful and awaited series piyush, appreciate your efforts for all the hard work and dedication your are giving to the CKA learning community. Thank you soo much 🙏🙏🙏

[@TechTutorialswithPiyush]

That means a lot! Thank you so much brother

[@sipsdolo]

Thank you, I learnt something new.

[@TechTutorialswithPiyush]

Glad it was helpful!

[@sinstergate]

I am loving it….i completed the azure devops cert watching devops playlist…i build my own dockerfile it is very easy….since I had a Linux background

[@TechTutorialswithPiyush]

Awesome! A huge congratulations to you

[@KRISHNAKUMAR-yj3dx]

Thanks a lot for this great explanation!!!!!!

[@TechTutorialswithPiyush]

You're welcome

[@our-s-life]

again, excellent .. very clear explanation

[@TechTutorialswithPiyush]

Glad you think so!

[@Risabhmewara]

Again another masterpiece Session...Great work Piyush..tons of thanks ..

[@TechTutorialswithPiyush]

My pleasure 😊

[@artbart9080]

Nice video. Didn't get difference between "copy . ." and "copy . ./" so i googled it. "copy . ." copy all files to container WORKDIR directory and "copy . ./" copy all files to container root directory.

[@TechTutorialswithPiyush]

Great job figuring it out!

[@rahuldey5564]

Both are same copy . . and copy . ./ !!!! the . means current directory, hence copy . app/

[@kaarthickpk]

Great work bro...Please keep up the good work.... 🙌👏

[@TechTutorialswithPiyush]

Thanks

[@nirjasmuhammed]

Thanks sir....

[@TechTutorialswithPiyush]

You're welcome! Glad you found it helpful.

[@Audi88835]

Really thanks..you did a great job for us..

[@TechTutorialswithPiyush]

It's my pleasure

[@TravellingSquad]

Hey Piyush, 3rd video in a row for me...Again I am thankful to you for your valuable time and KT.. Your videos give me best revision ever🤜🤛💯 Thank you buddy. Waiting for next video 😊

[@TechTutorialswithPiyush]

And the 4th one as well :) The fifth video will be published on Monday. Thank you for your support :)

[@HPKnowValley]

Awesome explaination

[@krishnaprasath-jh5gb]

Third video in row following up nice having up all this learning

[@TechTutorialswithPiyush]

Next one coming tomorrow! Let's go

[@SandeepChikkala-i4s]

Great work. To your dedication Hats-off

[@TechTutorialswithPiyush]

Thank you

[@pranay_vlogs_20]

simply superb piyush. Thank you.

[@gibrankhan8232]

Nicely explained

[@TechTutorialswithPiyush]

Thanks for liking

[@KRISHNAKUMAR-yj3dx]

Thanks a lot for such a great explanation!!

[@KRISHNAKUMAR-yj3dx]

Great explanation!!!

[@floehden]

Thank you for this interesting Multistage Tutorial

[@TechTutorialswithPiyush]

Glad it was helpful!

[@OpenToLearn]

Excellent video brother keep up the good work.

[@TechTutorialswithPiyush]

Much appreciated

[@printdevismitasahoo1407]

Very nicely explain, Looking forward to learn more.

[@TechTutorialswithPiyush]

Awesome, thank you!

[@johnpaulden007]

Thanks Piyush for this content.. to the point and precise !! Very thankful !!

[@TechTutorialswithPiyush]

Glad to hear that

[@ayaourag3169]

Thank you for this valuable video. I will publish the corresponding blog as soon as possible. Please keep up the great work! Regarding your last request, one of the best practices is to ensure you choose a secure base image by verifying it is built from a trusted source (such as Docker Official Images, Verified Publisher, or Docker-sponsored open source).

[@TechTutorialswithPiyush]

Thank you for the kind words! Yes, that is one of the best practices. Make sure to understand the rest of them as well through the official docker documentation.

[@ThachnamAG1989]

Thank you so much

[@TechTutorialswithPiyush]

You're welcome

[@Anonymous_810]

Great content 👌🏻

[@TechTutorialswithPiyush]

Thank you!

[@ebenezerbarning5093]

thanks again sir. you are a great teacher.

[@TechTutorialswithPiyush]

It means a lot! Thank you

[@TheZikori]

Great work sir

[@TechTutorialswithPiyush]

Thank you so much!

[@jensenjose682]

Waiting to get started with Kubernetes!!!

[@TechTutorialswithPiyush]

Yes one more video and then we'll start with Kubernetes from Monday onwards

[@nandhulala2207]

Very Informative. Thank you.

[@TechTutorialswithPiyush]

You're welcome

[@nike0822]

Thank you Piyush. It was really helpful and I like the way you explain things in a simple way. 🙌 Please also share or relate the concepts to the real time use cases.

[@TechTutorialswithPiyush]

Thank you so much for the feedback! I will have a lot to cover as we moved ahead in this series. I will definitely share real time use cases. stay tuned and keep supporting

[@MihirModi-ix7zw]

Great video, but there is a problem accessing a website. When you try to access the application via port 3000, you cannot do so because the files are served by the Nginx server, which listens to port 80 by default. To make the application accessible, you must bind port 80 of the container to port 3000 on the host machine. docker run -dp 3000:80 If I'm wrong, please correct me sir.

[@TechTutorialswithPiyush]

Hello Mihir, It was left intentional as a knowledge check. Great catch and yes you are absolutely right, that is the reason, I did not explicity expose the application in the dockerfile

[@syamkumar7751]

simple awesome

[@TechTutorialswithPiyush]

Thanks a lot

[@GowthamKumar-vf9qc]

Thank you bro 🥰

[@TechTutorialswithPiyush]

Welcome 😊

[@GrigTech]

Thank You

[@SundayBusiness-kf7mz]

Day 3 Great Content

[@SundayBusiness-kf7mz]

3 Day great content.

[@TechTutorialswithPiyush]

Thank you

[@yashdhoot9518]

great work buddy

[@TechTutorialswithPiyush]

Thank you!

[@princekwes88]

Awesome content.

[@TechTutorialswithPiyush]

Thanks

[@KsChina]

excellent!

[@TechTutorialswithPiyush]

Thank you

[@NortheastCareerSolutions]

Great content

[@TechTutorialswithPiyush]

Thank you!

[@popurisrinivas5479]

good content

[@TechTutorialswithPiyush]

Thank you

[@vm_naveen]

Thank you !

[@TechTutorialswithPiyush]

You're welcome!

[@christober.s7006]

Thanks for sharing

[@TechTutorialswithPiyush]

Thanks for watching!

[@prashlovessamosa]

great

[@nousheensafoora206]

day-3 completed

[@dr.hemantchauhan2613]

Nice

[@TechTutorialswithPiyush]

Thanks❤️

[@mgdesire9255]

Thank you guru ji ❤

[@TechTutorialswithPiyush]

You're welcome bhai

[@noelthomasbejoy3089]

Hey Piyush,just one doubt,why are you running docker run -it -dp, aren't it and d options contradictory? 12:41

[@TechTutorialswithPiyush]

Yes, you are right. I made the mistake, good catch bdw

[@suhasdhoke1735]

well explained :) thanks bhai

[@TechTutorialswithPiyush]

you're welcome bhai

[@rushikesh.spatil387]

Excited ❤🎉

[@TechTutorialswithPiyush]

Thank you!

[@anuraggupta1008]

Wait for the next stuff❤

[@TechTutorialswithPiyush]

Next video coming tomorrow!

[@kowshiks229]

in this multistage Dockerfile example, the port is not mentioned , then how can i access the todo-app

[@TechTutorialswithPiyush]

Good question! As we are using Nginx, it exposes the app on port 80 by default

[@kowshiks229]

@@TechTutorialswithPiyush thank you sir

[@girdhar3224]

Banger🔥

[@TechTutorialswithPiyush]

Thank you!

[@tobaakanbi7879]

Day 3 ✅

[@TechTutorialswithPiyush]

Great, keep it up

[@rayanjames3050]

My Dockerfile failed to run when using npm run build and npm build, the error was => ERROR [installer 6/6] RUN npm build 1.4s ------ > [installer 6/6] RUN npm build: 1.375 Unknown command: "build" 1.376 1.376 To see a list of supported npm commands, run: 1.376 npm help

[@TechTutorialswithPiyush]

Could be the issue with your project. Check if you have the build command in your json file

[@harshithareddy4771]

Best practices : 1. Exclude files and directories that are not needed in the Docker context(Using .dockerignore File) 2. Reducing the Number of Layers i.e. Each RUN, COPY, or ADD instruction adds a layer to the image. Combine multiple commands into a single RUN statement to reduce the number of layers.

[@TechTutorialswithPiyush]

That's a good start but there are a lot more. Check out the below documentation as well: docs.docker.com/build/building/best-practices/

[@harshithareddy4771]

Thanks for the additional documentation link! I'll review it.

[@naweedahmadkhesrawi7936]

Programming skills are required for kubernetes administration or no???

[@baivabmukhopadhyay8970]

Do we need to know any specific cloud provider before doing this course?

[@TechTutorialswithPiyush]

We will not be using any Cloud as the focus is on Kubernetes. Using a cloud service would mean that the control plane is managed by the Cloud provider, which would limit learning. We will be using a local Kubernetes installation on a Kind cluster and, later, a Kubeadm installation on virtual machines.

[@gokulprasathnandhakumar8313]

I completed my day -3 course i completed my multi staging task

[@TechTutorialswithPiyush]

lets go💪

[@Ramm165]

Hi piyush i have one question.For machine learning based projects we have model weights which are typically 700mb range so do we generally package the model weights in the docker image ?

[@TechTutorialswithPiyush]

Sorry buddy, I dont have much experience with ML related workloads. What I know is, we can pre-pulled the images on our node to save the pod creation time, we can do bin packing as well.

[@Ramm165]

@TechTutorialswithPiyush ok thank you piyush

[@christober.s7006]

Best practices : Don't install unnecessary packages and Sort multi-line arguments. got it through Docker docs.

[@TechTutorialswithPiyush]

Great job!

[@bonganinyoni1428]

Great video, 3rd Day, How can we expose this app? I think that instruction was left out but people will google around 🤣

[@TechTutorialswithPiyush]

Well yeah, I did miss that intentionally. I want people to figure it out😄

[@keshav0844]

even after exposing, it does not work. If you yours is running, please help.

[@dr.hemantchauhan2613]

❤❤

[@TechTutorialswithPiyush]

🙏❤️

[@debillion]

Avoid using mutiline. The multilines should be merged to avoid too much layers

[@TechTutorialswithPiyush]

Yes, I was planning to create a seperate video for all the best practices with Docker, thanks for sharing it tho.

[@rayanjames3050]

Day D

[@niranjanmjniru8147]

reducing the layers

[@TechTutorialswithPiyush]

Not so much, layered architecture actually helps with reducing size. I would recommend checking out the docker best practices on the official documentation page.

[@uttamsharma9042]

next video come

[@TechTutorialswithPiyush]

Video 4 will be published tomorrow.

[@vidyasagar8810]

👌🤌👌

[@nousheensafoora206]

Distroless image

[@TechTutorialswithPiyush]

That's true, also many other things such as Multistage build

[@commerce9261]

a

[@samirhdvslg156]

remove the annoying background music

[@vs9108]

Thank you !

[@codytech9558]

Great Session , please continue

[@SundayBusiness-kf7mz]

Day 3 Great Content

[@sagarbirla2879]

amazing video

[@TechTutorialswithPiyush]

Thank you

[@siddharthsingh9253]

Nice