A 1 KB Docker Container

216 点作者 nathan-osman超过 7 年前

16 条评论

thebsdbox超过 7 年前

As part of a competition before the last DockerCon I managed to get a container down to 69BDetails: <a href="http://thebsdbox.co.uk/in-pursuit-of-a-tinier-binary-er/" rel="nofollow">http://thebsdbox.co.uk/in-pursuit-of-a-tinier-binary-er/</a>Code: <a href="https://gist.github.com/thebsdbox/29e395299f89b52214b66269f5b33f7d" rel="nofollow">https://gist.github.com/thebsdbox/29e395299f89b52214b66269f5...</a>

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ffk超过 7 年前

The smallest useful container I know of is 129B. It was created to test how many containers docker can spin up while reducing the overhead of what was in the container itself.tianon/sleeping-beauty latest 2e8193709fa7 6 months ago 129B<a href="https://github.com/tianon/dockerfiles/tree/master/sleeping-beauty" rel="nofollow">https://github.com/tianon/dockerfiles/tree/master/sleeping-b...</a>

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avian超过 7 年前

Another example of a really small container that doesn't do much, but is made without using assembly directly is the Docker "hello-world". It's built from C without linking in libc:<a href="https://github.com/docker-library/hello-world/blob/master/hello.c" rel="nofollow">https://github.com/docker-library/hello-world/blob/master/he...</a>I always thought this was a bit misleading. A "hello world" container is 1 kB, but the bare minimum container that does something useful in practice is rarely less than 100 MB in size.

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arianvanp超过 7 年前

We already have a portable container format for executables with no dependencies... It's called an ELF binary... Why would you even put a static binary in a container in the first place? I don't get it.

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adlpz超过 7 年前

This is of course pretty pointless, I mean it's neat but all these tiny containers don't really do anything so it isn't much more than a cool trick.However there is a great lesson to take from this: you can create single-binary but really useful containers for just a few MBs, which is nothing in practice for a usual sized server, an a lot more lightweight than usual containers based off Alpine or Ubuntu.In fact I run my static websites using that: a small 8-ish MB statically compiled web server "written" (it's really just library glue) in Go.

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brobinson超过 7 年前

I have one that is 344 bytes: <a href="https://github.com/dseevr/cpu_consumer" rel="nofollow">https://github.com/dseevr/cpu_consumer</a>It just runs a tight loop that consumes an entire core.

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darren0超过 7 年前

Container in a (240 character) tweet <a href="https://twitter.com/thaJeztah/status/913378165124423680" rel="nofollow">https://twitter.com/thaJeztah/status/913378165124423680</a>Replace -d with -D for macOS

ttwwmm超过 7 年前

If you want to reduce the size more, try emitting a single layer as a tarball which you can pipe to docker load. That will reduce your layer count to one, plus you can omit a bunch of the metadata that Docker includes when you build from a Dockerfile (it doesn't seem to care at runtime).<a href="https://github.com/moby/moby/blob/master/image/spec/v1.md" rel="nofollow">https://github.com/moby/moby/blob/master/image/spec/v1.md</a>

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userbinator超过 7 年前

Notice that the executable itself contains less than 100 bytes of instructions, but the file is still 736 bytes. Even without optimising the Asm itself (I can see at least 2-3 bytes improvement at a glance), that could probably be reduced even further:<a href="http://www.muppetlabs.com/~breadbox/software/tiny/teensy.html" rel="nofollow">http://www.muppetlabs.com/~breadbox/software/tiny/teensy.htm...</a>736B may seem tiny to most people, but if you're working in Asm that's a lot --- there's plenty of interesting things (beyond "call the OS a few times") the demoscene has done with smaller binaries; here's an assortment of 512B ones:<a href="http://www.pouet.net/prodlist.php?type[]=512b" rel="nofollow">http://www.pouet.net/prodlist.php?type[]=512b</a>

siscia超过 7 年前

I developed a little side project that aimed to be a serveless open source alternative, it is called effe and uses go as main language.The whole idea is to compile a go program and put it into a docker container and have it listening to the network for a single HTTP endpoint.It is interesting because an useful images come to be less than 6MB :)Link to the project: <a href="https://github.com/siscia/effe-tool" rel="nofollow">https://github.com/siscia/effe-tool</a>

nemasu超过 7 年前

Reminded me of people making docker containers out of this: <a href="https://github.com/nemasu/asmttpd" rel="nofollow">https://github.com/nemasu/asmttpd</a>eg. <a href="https://hub.docker.com/r/0xff/asmttpd/" rel="nofollow">https://hub.docker.com/r/0xff/asmttpd/</a>7KB web server container.

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pbiggar超过 7 年前

I did a similar thing, using a tiny executable that someone else had made. However, even though the container was around 100 bytes, I couldn't make a container that was smaller than some much larger number, maybe 512kb? This was in 2015, so maybe that limit has changed - any docker folks know anything about this?

jzelinskie超过 7 年前

For reference, Kubernetes uses a `pause`[0] for a similar reason.[0]: <a href="https://github.com/kubernetes/kubernetes/tree/master/build/pause" rel="nofollow">https://github.com/kubernetes/kubernetes/tree/master/build/p...</a>

Varcht超过 7 年前

OT, what's the smallest windows/.net containers out there? I have some legacy stuff I'd like to dockerize but they end up so big and slow to deploy. I've just been rewriting them.

maruhan2超过 7 年前

Im not familiar with dockers so bear with me, but why is another container needed for the reverse proxy?

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daviesgeek超过 7 年前

This was a really fascinating read. Enjoyed it thoroughly