pkg(docker-cli,docker-engine): add arm/v5 platform

[crazy-max]

No description provided.

[crazy-max]

dockercore/golang-cross:xx-sdk-extras image does not have a dummy linux/arm/v5 platform and therefore fails: https://github.com/docker/packaging/actions/runs/3972039519/jobs/6809553054#step:7:191

> [linux/arm/v5 internal] load metadata for docker.io/dockercore/golang-cross:xx-sdk-extras:
------
Dockerfile:41
--------------------
  39 |     
  40 |     # osxcross contains the MacOSX SDK for xx
  41 | >>> FROM dockercore/golang-cross:xx-sdk-extras AS osxsdk
  42 |     
  43 |     # go base image to retrieve /usr/local/go
--------------------
ERROR: failed to solve: dockercore/golang-cross:xx-sdk-extras: no match for platform in manifest sha256:9ac9641111aeb58ce39b1e7423f80dd08af0e05d1c9fa38725f6ee37a1573b41: not found

[tianon]

Resulting binaries look OK on my system: 👀

$ cat /proc/cpuinfo
processor	: 0
model name	: Feroceon 88FR131 rev 1 (v5l)
BogoMIPS	: 400.00
Features	: swp half thumb fastmult edsp 
CPU implementer	: 0x56
CPU architecture: 5TE
CPU variant	: 0x2
CPU part	: 0x131
CPU revision	: 1

Hardware	: Marvell Kirkwood (Flattened Device Tree)
Revision	: 0000
Serial		: 0000000000000000

$ ./dockerd --version
Docker version v0.0.0-20230115001426-98c1140, build 98c1140c4490699d65a2fcd1009570fc0e412550

$ ./docker-init --version
tini version 0.19.0 - git.de40ad0

$ ./docker-proxy --version
docker-proxy (commit 98c1140c4490699d65a2fcd1009570fc0e412550) version v0.0.0-20230115001426-98c1140

[thaJeztah]

Not sure if it makes a difference for caching, but some questions;

• move the PKG_NAME and some of the other ones later?
• do the apt-get and xx-apt-get steps have to be separate? (would it make sense to combine them otherwise?)
• does xx-apt... use TARGETPLATFORM? If not, that one could be moved until after that step as well

Suggested change

	FROM build-base-static AS builder-static-nosdk
	ARG DEBIAN_FRONTEND
	RUN apt-get install -y --no-install-recommends dpkg-dev clang lld llvm make pkg-config
	ARG PKG_NAME
	ARG DOCKER_CLI_REF
	ARG NIGHTLY_BUILD
	WORKDIR /build
	ARG TARGETPLATFORM
	RUN xx-apt-get install -y gcc libc6-dev
	FROM build-base-static AS builder-static-nosdk
	WORKDIR /build
	ARG DEBIAN_FRONTEND
	RUN xx-apt-get install -y --no-install-recommends \
	clang \
	dpkg-dev \
	gcc \
	libc6-dev \
	lld \
	llvm \
	make \
	pkg-config
	ARG DOCKER_CLI_REF
	ARG NIGHTLY_BUILD
	ARG PKG_NAME
	ARG TARGETPLATFORM

[crazy-max]

• move the PKG_NAME and some of the other ones later?

Yes good point, could be moved after xx-apt

• do the apt-get and xx-apt-get steps have to be separate? (would it make sense to combine them otherwise?)

Yes they have because xx-apt-get is using TARGET_PLATFORM.

• does xx-apt... use TARGETPLATFORM? If not, that one could be moved until after that step as well

Yes every xx-* command needs TARGETPLATFORM.