HowTo: Adding additional dependencies

[SeeJayDee]

Hi, I'm building for RPi3/aarch64 target on Windows amd64.

I need to add dependencies:
libasound2-dev
libssl-dev
libpulse-dev
libdbus-1-dev

...but unsure how to do this correctly.
Presumably adding those packages into the RUN ... apt-get line of the Dockerfile will only install the amd64 versions.

I usually do OK just looking through the source and tweaking it to my needs but in this case I'm stumped.
Any help would be appreciated! :)

(Also happy to write up a guide covering what steps I took, if you want to add such a thing to the repo later)

[messense]

Something like this

dpkg --add-architecture arm64
apt-get update
apt-get --assume-yes install libssl-dev:arm64

See also https://wiki.debian.org/Multiarch/HOWTO