Fix arm64 build for m1 with docker-desktop

[gh7531]

I needed to build a Grafana image that had to run on an M1 with docker-desktop. Therefore, I tried to build using the command suggested in #65 (comment), but it failed during packaging Unknown token 'armv6' in 'node14-linux-armv6'.
I looked into the package_target.sh and saw that the arm64 architecture was mapped to armv6 which seems to be the issue. Changing this to arm64 allowed me to build for linux-arm64-glibc.

Then I build a Grafana docker image on my m1 mac using docker-desktop and the plugin seemed to work.

Note:

• I only tested this on my m1 mac with docker-desktop
• I only tested the version with a bundled chromium
• I don't know if this change breaks other setups, since I don't have access to other systems.

[ArturWierzbicki]

hey @gh7531, thanks a lot for the contribution! Have you tried changing the arch in the Makefile to darwin-arm64-unknown

grafana-image-renderer/Makefile

Line 3 in 391eec1

ARCH = darwin-x64-unknown

?

I believe this already works on the master branch for local builds, but, unfortunately, it does not work for packages intended for distribution. (https://github.com/grafana/grafana-image-renderer/pull/326/files)

[gh7531]

Thank you! Building with ARCH=darwin-arm64-unknown works. I assumed, since I'm running in docker, I needed the linux version.

Is there a plan to distribute packages for arm64?

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