docker: publish ARM images

[duanhongyi]

Now arm is used more and more widely. At present, many projects have docker images of arm, such as Nats. I hope that maintainers can add arm related images in docker hub.

[danbf]

this may be as simple as changing over to buildx in the image build chain ala'

docker buildx build --platform linux/amd64,linux/arm64,linux/arm/v7

https://www.docker.com/blog/multi-arch-images/

i might be able to write a patch for this if someone points to the relevant section

[danbf]

is it changing https://github.com/nsqio/nsq/blob/master/dist.sh#L45 to this gonna do it?

docker buildx build -t nsqio/nsq:v$version . --platform linux/amd64,linux/arm64,linux/arm/v7 --push

[danbf]

@mreiferson ^^

[danbf]

actually since buildx needs some setup, i do this on my end for multi-arch's:

ensure i cleared out the buildx builder in case it got interrupted before

docker buildx rm <builder-name>

then:

docker buildx create --name <builder-name>
docker buildx use <builder-name>
docker buildx build --tag <remote_tag> . --platform linux/amd64,linux/arm64,linux/arm/v7 --push

then clear out the buildx builder so it's ready for the next time i run it

docker buildx rm <builder-name>

[danbf]

i have it running in sso like this buzzfeed/sso#319 so i'll take a crack at this

[mreiferson]

looking forward to it @danbf

[danbf]

@mreiferson got the PR in #1355 for 👀

[mreiferson]

see #1355