Nginx-proxy-manager: "exec format error" on arm64/armv7 (Raspberry Pi 3B+)

[fr9ncis]

I keep getting
db_1 | standard_init_linux.go:211: exec user process caused "exec format error"
followed by
app_1 | [6/3/2020] [7:21:29 PM] [Global ] › ✖ error getaddrinfo ENOTFOUND db
(obviously, since db just crashed) which then leads to Bad Gateway errors when trying to login into the WebUI.

Target architecture: armv7l, armv7 as well as aarch64/arm64.
Tested on: Raspbian Lite, Ubuntu 20.04 Server 64bit and HypriotOS/armv7 (all of them were clean installs)

This is my first time running Nginx Proxy Manager on my RPI3 but I've been using on my x86_64 server just fine.

I'm not quite sure wether docker or s6 isn't detecting my archtitecture properly and thus pulling the wrong images. I seem, however, unable to specify the target arch myself (i.e.

 image: 'jc21/nginx-proxy-manager:latest-armv7'

would be helpful (but again - I can't seem to do that..)

I suppose this is a bug since the guide indicates that no special setup needs to be done for ARM devices

'The docker images are a manifest of all the architecture docker builds supported, so this means you don't have to worry about doing anything special and you can follow the common instructions above.'
Source: Nginx Proxy Manager Setup Page

Edit: Spelling.

[fr9ncis]

This isn't really a fix itself, but as a workaround for anyone else encountering this issue:

Replace
image: jc21/mariadb-aria:10.4 (same for 10.4.12 and latest tags)
with
image: yobasystems/alpine-mariadb:latest
and it should work.

Please either update the guide or fix the jc21/mariadb-aria image.