add docker multi-platform / multi-arch info

Author: bnfinet

CHANGELOG.md

@@ -4,6 +4,10 @@
 
 Coming soon! Please document any work in progress here as part of your PR. It will be moved to the next tag when released.
 
+## v0.43.0
+
+- support multi-platform / multi-arch builds for published Docker images including `linux/amd64` and `linux/arm64`
+
 ## v0.41.0
 
 - upgrade golang to `v1.23` from `v1.22`

README.md

@@ -332,6 +332,8 @@ an `alpine` based container built from `Dockerfile.alpine`
 - `quay.io/vouch/vouch-proxy:alpine-latest`
 - `quay.io/vouch/vouch-proxy:alpine-x.y.z`
 
+As of `v0.43.0` both of these images are [Multi-platform builds](https://docs.docker.com/build/building/multi-platform/) supporting `linux/amd64` and `linux/arm64`.
+
 Vouch Proxy `arm` images are available on [Docker Hub](https://hub.docker.com/r/voucher/vouch-proxy/)
 
 - `voucher/vouch-proxy:latest-arm`