Update Docker Compose Apple Silicon guidance

[sevein]

The AtoM development service images now publish ARM64 variants, so Apple Silicon and other ARM-based hosts can use the default Compose file without an additional platform override.

Discourage platform: linux/amd64 for everyday ARM development because it forces emulation instead of using native ARM64 images.

Image variant checks:

docker buildx imagetools inspect docker.elastic.co/elasticsearch/elasticsearch-oss:7.10.2
docker buildx imagetools inspect percona/percona-server:8.4

When you stop using docker-compose.override.arm.yml you may see the following error because Docker could be using locally cached linux/amd64 images for those tags:

! elasticsearch                    The requested image's platform (linux/amd64) does not match the detected host platform (linux/arm64/v8) and no specific platform was requested
! percona                          The requested image's platform (linux/amd64) does not match the detected host platform (linux/arm64/v8) and no specific platform was requested

To reset them to native ARM64:

docker compose -f docker/docker-compose.dev.yml down
docker image rm docker.elastic.co/elasticsearch/elasticsearch-oss:7.10.2
docker image rm percona/percona-server:8.4
docker compose -f docker/docker-compose.dev.yml up -d

CC @yenaing-oo

[melaniekung]

LGTM, thanks @sevein !