[GitHub] [couchdb-ci] kocolosk commented on a change in pull request #33: Update process for multi-arch images, add builder Action

[GitBox <gi...@apache.org>]

kocolosk commented on a change in pull request #33:
URL: https://github.com/apache/couchdb-ci/pull/33#discussion_r801828355



##########
File path: README.md
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@@ -59,31 +65,38 @@ the [kerl](https://github.com/kerl/kerl) build system, and installs them to
 `/usr/local/kerl` for activation before builds. This version is intended for use
 in standard CI runs, such as for pull requests.
 
-# Building a cross-architecture Docker image
+## Building a cross-architecture Docker image
 
-This only works from an `x86_64` build host.
-
-First, configure your machine with the correct dependencies to build multi-arch binaries:
+We can use Docker's
+[Buildx](https://docs.docker.com/buildx/working-with-buildx/) plugin to generate
+multi-architecture container images with a single command invocation. Docker
+Desktop ships with buildx support, but you'll need to create a new builder to
+use it:
 
 ```
-docker run --privileged --rm tonistiigi/binfmt --install all
+docker buildx create --use

Review comment:
       Hm, OK. Fair request.
   
   One issue is that the previous process only produced arch-specific images and didn't do the work to produce a single multi-architecture manifest. That's fixable.
   
   I'll also have to see about reworking the dockerfiles to allow for the old $CONTAINERARCH approach. Let me see if there's a simple way to do that.




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