DEPRECATED: The legacy builder is deprecated and will be removed in a future release

[BaseMax]

Here https://github.com/RocketChat/Rocket.Chat.Embedded.arm64/tree/develop/docker/rocketchat

[asrez@asrez rocketchat]$ sudo docker build -t rocketchat:arm64-6.2.6 .
DEPRECATED: The legacy builder is deprecated and will be removed in a future release.
            Install the buildx component to build images with BuildKit:
            https://docs.docker.com/go/buildx/

Sending build context to Docker daemon   5.12kB
Step 1/25 : FROM arm64v8/node:12.22.1-stretch as builder
12.22.1-stretch: Pulling from arm64v8/node
0789e4a342a1: Downloading  9.191MB
bfd2ed69368e: Downloading  527.6kB
c0c76e514669: Download complete
0aa19114dc4c: Download complete
16ac978c5b82: Waiting
681e567ebcf9: Waiting
5969d2ff62ae: Waiting
7f7ef0241b53: Waiting
206c47b6c623: Waiting

[tayyebi]

Same here.

[achamwada]

Same here

[MaCkRage]

Same here