Here's a preview from my zine, How Containers Work!! If you want to see more comics like this, sign up for my saturday comics newsletter or browse more comics!
read the transcript!
sharing container images is useful
smiling stick figure with curly hair: I made an image you can use to run Redis with just one command!
smiling bald stick figure: yay!
a registry iS a server that serves images
images have an ID, like “leff92”
and sometimes a tag, like “18.04” or “latest”
registries let you download just the layers you need
client, represented by a box with a smiley face: I already have the Ubuntu base image, I just need 0fe223
registry, represented by a smaller box with a smiley face: here’s 0fe223!
there are public container registries…
person: I’m going to use the latest official public Redis image to test my code!
… and private registries
developer at COMPANY, represented by a smiling bald stick figure: every time we build our web service, we upload a new image to our private registry
be careful where your container images come from
smiling stick figure: I’ll just run this image from RANDOM_PERSON
2 months later: oh no! RANDOM_PERSON is mining bitcoin on my server
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