Great explanation! Thank you! But I have a question: What happens with the layers if we update an existing image (e.g. your 8-layers image)? Does it rebuild all the 8 layers from base images and delete the old ones? Or it adds additional layers to the existing 8L?
FROM instruction brings all those 8 layers as the first step. Which means, none of the base layers are rebuilt. You start with that as a base, and then anything in your dockerfile gets added as a layer each.
With multi stage builds, each stage gets converted into a new image. Which would mean everything except for the last stage is discarded. I will create a more elaborate video explaining this. Keep an eye on the updates to the channel and you shall see it by the end of this week.
Definitely, it would help people understand things better, especially when executing commands they get to know what happens in the background.
Amazing explanation
pictorial representation always makes a visual subtle in sub-conscious mind... nice
"one image worth thousand words", Well done , thanks!
Well explained!! Thanks!
Excellent stuff
Well explained.
Perfect man. Thank you a lot.
I like it
Great explanation! Thank you! But I have a question: What happens with the layers if we update an existing image (e.g. your 8-layers image)? Does it rebuild all the 8 layers from base images and delete the old ones? Or it adds additional layers to the existing 8L?
FROM instruction brings all those 8 layers as the first step. Which means, none of the base layers are rebuilt. You start with that as a base, and then anything in your dockerfile gets added as a layer each.
Thanks! it was really interesting!
nice
Hi can you explaining the layering when there are multi stage builds
With multi stage builds, each stage gets converted into a new image. Which would mean everything except for the last stage is discarded. I will create a more elaborate video explaining this. Keep an eye on the updates to the channel and you shall see it by the end of this week.
@@SchoolofDevops understood makes more sense now of how multi stage builds reduce image layers.