[DOCS] Add Docker port warning from #48142

[Kovah]

@jrodewig @pugnascotia

This is the new pull request pushing changes from the original pull request #48142 to master. Please see the original pull request for more details.

PS: CLA is already signed.

[pugnascotia]

Thanks for redoing this on master. What did you think about my suggested wording?

Please note that this configuration exposes port 9200 on all network
interfaces, and given how Docker manipulates `iptables` on Linux, this
means that your {es} cluster is publically accessible, potentially ignoring
any firewall settings.  If you don't want to expose port 9200 and instead
use a reverse proxy, replace `9200:9200` with `127.0.0.1:9200:9200` in the
docker-compose.yml file. {es} will then only be accessible from the host
machine itself.

At a minimum, the text should use "{es}" instead of "Elasticsearch", to match the rest of the docs.

[pugnascotia]

@elasticmachine test this please

[elasticmachine]

Pinging @elastic/es-core-infra (:Core/Infra/Packaging)

[elasticmachine]

Pinging @elastic/es-docs (>docs)

[jrodewig]

LGTM. I'll merge these changes. Thanks @Kovah.

[Kovah]

Great, thank you all for the support with this!