On Raspberry Pi 4 are “FROM” base images golang:latest and arm32v7/golang:latest any different?

Question

If I wish to create a Go binary in a Docker image to be run as a container on a Raspberry Pi 4 (whose architecture is 32-bit ARM AFAIK), which base image is recommended to be used?

• FROM golang:latest
• FROM arm32v7/golang:latest

In fact will there be any difference, or will Docker be clever enough to know that the first should really be the second on a 32-bit ARM architecture?

(I know the second choice works, and I think the first also does.)

Answer 1

These images are the same. You can check hash of each image and see that they are equal: 6ab6b95325d8 ( golang:latest , arm32v7/golang:latest ). I will prefer to use generic golang:latest , because it will allow to build new image on different platform without changes to Dockerfile .

Note from arm32v7/golang:latest :

this is the "per-architecture" repository for the arm32v7 builds of the golang official image