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@udhaykumar9853

2 жыл бұрын

Hello Nana 👋 thanks for sharing 👍

One thing I would like to add about the caching is that it can sometimes screw over your buiild. It is therefore actually advised by Docker to always test your Dockerfile with the --no-cache flag every once in a while (for example with Github Actions or automatated build testing, a good idea would be to use --no-cache) in case you are for example building external files. In that case, a layer like "git clone ..." can be cached, but if the files in that repository change, it will still use the cached layer because the command did not change. Great video as always

@TechWorldwithNana

2 жыл бұрын

Thanks for sharing!

@MateuszCholewka

2 жыл бұрын

Good point! The alternative solution is to use the version references, the same as specifying a docker image tag. For example, when you clone something you should specify a tag or commit hash. Same for installing something with apt or apk, you can specify the version of the package. In this case, you need to manually manage to update all your dependencies, but you have more control over that. If you update something, the command will be changed, and docker will rebuild the cache. That will also avoid situations when something works differently for a few developers because some of them use the old cache, and some of them built their images from scratch.

@koenbrink

2 жыл бұрын

@@MateuszCholewka yep, that would actually be even better. That would also be more inline with the points in this video about 'always specifying a version number'. Thanks for that!

Awesome video! I spent tons of hours on the official documentario about caching layers and I couldn't figure out how it works, now you made me understand in three minutes, I love you!

I love the way you present your content in such a concise, but technically accurate manner. Congratulations and thank you for sharing Nana.

The way you explained everything in this video is not just amazing but super easy to understand too. Thank you so much for this wonderful video. You are awesome.

Thank you Nana! Never missed any of your videos on Docker or Kubernetes. You are one of the best out there!

I am surprised that nobody mentioned docker secrets and sensitive data in general; You should NOT run commands that have passwords/api tokens as parameters (as they would show up in the history) and you should also NEVER copy sensitive unnecessary files (e.g. certificates for code signing) into an image during build, as people can revert to that layer and get it out of there; mount a host directory instead and read it from there, this way it never ends up in a layer.

@TechWorldwithNana

2 жыл бұрын

Thanks for sharing Niklas!

@morsikpl

2 жыл бұрын

Because Docker Secrets are part of Docker Swarm, and this video is not about Docker Swarm ;)

@Das_KBob

2 жыл бұрын

​@@morsikpl Touché;)

@r0zemary

Жыл бұрын

@@morsikpl Secrets still work in regular compose, just not much of a point compared to mounting them (which *is* what the original comment said, btw 😅)

This video is fantastic. The tips go from basic to advanced so don't stop just because it seems like the tips are common sense. I'm in the middle of my docker journey and have one application in production right now. I found these tips to be useful and include things that I need to implement in my existing app and in others in the future. Thank you for this video.

Hi Nana!! Your videos are always a huge contribution! The way you detail the topics is fantastic! applause for your channel! At some point it would be good, best practices for docker-compose, you are well nana greetings!

Thank you Nana ..!! Best video for docker best practice explanation .

Another great video!! Always learn a lot from your videos!! You really do a great job of simply explaining core concepts!

Always win me over with her charisma ,quality display of intellect and explanations on topical issues, this is another excellent work. Thanks Nana you are easily my champion

@TechWorldwithNana

2 жыл бұрын

Thanks so much for your nice words!

I had no Idea about changes in previous layers breaking the caching of the following layers! Excellent video

Absolute Saviour you are, anything i search n there u have created a video, Thanks you for the time and efforts

Once again, very useful and high-quality content. Thanks Nana! I have a question: could you tell us some more about the tools you are using to create these videos? In particular, I am interested in what software you use to create the animations and such.

Amazing work mate, thank you so much for making this video, all the best to you, and Stay Strong!

Thank you so much! You helped me a lot with leaning Docker and Kubernetes XD

Really helpul, nicely explained things, Loved the video... :)

As always, valuable content created. Thank you Nana for making topics so much easy to grasp. Will it be possible to create a video on Docker in Docker concept, it will help alot. Thanks Once Again.

I had no Idea about changes in previous layers breaking the caching of the following layers! Excellent video 👍

You did it great. Thank you for sharing

Very good recommendations explained concisely; I shared this with my team halfway through watching, love it

Great video. A similar one for development setup would be awesome.

Another great and simple digestible topic. You rock

Thank you so much, the video was helpful and informative.

Awesome. Extremely useful best practices summary. And it is so clearly explained that if you don´t understand it, probably you have to think in changing your career.

One quick note. For Image caching you have to use immuteable tags/layers. Otherwise a for example when a cached latest tag is used and never get updated. To be more precise you can also use the layers/image digest instead of a tag. @Nana As always: Great videos! :)

Love your videos Nana ... keep them going

Good video! Thank you for sharing! Just one thing to mention: since you're saying in "production", maybe you wouldn't use node.js 17(odd version instead of LTS, which is unstable).

Great presentation and well explained! Keep it up Nana!

I started watching this video with a lot of skepticism, but really great practices and it responded to a lot of my question, even if I was doing some tips I didn't know why it was done like so (as I was basically copy pasting commands) great explanation thanks.

@TechWorldwithNana

2 жыл бұрын

Really happy to hear, thanks Ahmed for the feedback! :)

Great video, would love to see others like this one for other technologies

@TechWorldwithNana

2 жыл бұрын

Thanks for your comment, good to know! :)

I think another best practice good to mention is to minimize the number of layers, for example instead of write multiple `RUN` instructions which created multiple layers, we can write a single `RUN` instruction with the necessary commands by concat it with && or even backslash `\` to decorate the Dockerfile for better readability.

@nathanlewis42

2 жыл бұрын

Wouldn’t that mess less effective caching? If you had three commands anded together and only the last need to change you would not have a cache of the previous two.

@berndeckenfels

2 жыл бұрын

@@nathanlewis42 yes, it’s probably better to not use it in the build step and only in the run image if the missing cache Is a tradeoff (depends on how often you change a image and how many copy’s are distributed)

Great explanation Nana, thank you!

Thank you very very much, you have the best and the easy content, keep going please.

Thank you Nana! Perfect like always.

@TechWorldwithNana

2 жыл бұрын

Thanks so much Tom!

Your videos are excellent, Nana, thanks a lot.

Thanks a lot! It is very useful for beginners.

Thank you so much!

Thanks for sharing. Your channel is an amazing resource.

What a awesome tips! Thanks a lot nana🙏

Thanks a lot. This information is very valuable.

Thanks Nana again from Argentina!! Very Helpful content. Regards!

Thank you Nana , another awsome work

excellent explanation for caching layer. Ty!

Hi Nana, could you do best practice in using docker for non development purpose, more into administration jobs, like what is the best practice in volume management, updating image, how to transfer volume between hosts, etc.??

This is brilliant, huge thanks 😊

Nana always let me learn something really materials. Thanks

One of the most popular practice to reduce a size of a layer is deleting cache files the package managers generates during installation process.

Thank you so much. It's very helpful 😍

One of the best informative docker videos.

Thanks for sharing best practices

course completed, thank you Ms Nana. please recommend next, I am thinking of Jenkins

@TechWorld with Nana amazing video and the k you for educating us.

Great content! You have good didactics and a very good slides and examples.

If we can get the best practices for docker-compose. It will like aged wine and tasty cheese. Great video. You just level up docker game to a whole new level. Thank you

Great docker usage shareing. Thanks!!!💕💕💕

Thank you for the easy explaination!

This is great. Thank you!

And, of course, you can also specify the images versions for a multi-stage build.

Awesome! Thank you so much!

thanks Nana, really helpful tips for me

Really good explaination and voice tone 100% clear and perfect.

@TechWorldwithNana

2 жыл бұрын

Thanks for the feedback :)

@teliat6242

2 жыл бұрын

@@TechWorldwithNana Wish you continuously touch with more and more successful.

Great lecture thank you for sharing!

Very useful information about Docker. Thank you Nana.

Thank you Great tutorial

Informative and detailed❣️

Perfect as usual!

Great video Nana, please more video on best practices !! 😊

@TechWorldwithNana

2 жыл бұрын

Thanks for your feedback, glad to hear! :)

She is amazing!!! Beautiful and smart!

Excellent info for a newbie like myself. 🙂

These are great videos, thank you!!

such a great content, thanks

Great video!!! Thank you!

Interesting.. a very useful.. thanks you Nana

Awesome!! Really helpful Video. Can you please make one video for vault integration and uses with kubernetes as well :)

Thanks Nana for your valuable information sharing 👍. Pls do one video for k8s

Great content, thank you!

Great tips! Thank you!

Fantastically presented content.

Great video, as always .. 👏

Great tips, thank you! 😀

Thanks! This video was really helpful.

@TechWorldwithNana

2 жыл бұрын

Thank you Gary!

Nicely done, didn't know the details of how the caching worked / broke or the default user being root. *scampers off to fix docker images*

Awesomely explained! Thanks

Simply awesome video!

動画のご提供ありがとうざいます！大変わかりやすく、かつ、役に立ちました。これからもどうかよろしくお願いいたします。

Nana saving my DevOps Career.

Great compilation 👍🏻

Very usefull video, thanks!

excellent all time nana, but could you make a video for CRD in kubernetes?

great video! Learned a few things :)

Thank you!!!!

Thank you!

I love your content!

Thanks Nana ♥

awesome useful video! thank you

Great explanation - experts , can anyone point me to the best possible base image that I can use in my dockerfile for a java 8 and 11 project?

Thanks Nana!

Thank you, thank you, this didn't only help me managing my stuff more but also understanding what I just copypasted from recommendations xD, which I can still recommend to anybody since those are from people who know what they are doing.