Publish docker image for more cpu architectures

[sethidden]

Is your feature request related to a problem? Please describe.
I'm trying to start botamusique on docker on my raspberry pi 4b homeserver, but I'm getting

pi@raspberrypi:/mnt/ssd0/docker/umurmur $ docker logs botamusique
standard_init_linux.go:219: exec user process caused: exec format error
standard_init_linux.go:219: exec user process caused: exec format error
standard_init_linux.go:219: exec user process caused: exec format error
standard_init_linux.go:219: exec user process caused: exec format error

This error is kinda cryptic but I know that it's caused by installing a docker image on a computer whose CPU architecture it was not built for. I see on dockerhub botamusique is built only for amd64:

But I'm trying to run it on Raspberry Pi which is armv7 (or arm64 if you're running a 64-bit system which is not the norm for Raspberry Pi since raspbian stable is 32-bit, but can be used (Rasperry Pi OS now comes in both 32-bit and 64-bit. Both variants are now stable. Before 64-bit was in beta, but that's not the case anymore)

Describe the solution you'd like
In your Dockerfile in the repo root I can see that you use the python:slim as the base image, and luckily it supports many different CPU architectures, not only amd64:

The ones marked are most important for raspi, but supporting all architectures desn't really cost you anything.

You may be thinking "yo but I only have an amd64 PC, I can't build for other architectures", but luckily there's the docker buildx command that lets you build for an architecture you're not on.

Back in the day I made the umurmur-docker package with the aim to support many architectures and I've written some instructions on how to use docker buildx: https://github.com/sethidden/umurmur-docker/wiki/FAQ

Describe alternatives you've considered
N/A

Additional context
N/A

[TerryGeng]

Instead of Python, we rely heavily on FFmpeg and the platforms available are limited IIRC. @azlux Do you have any thoughts on it?

[azlux]

@sethidden is the local dockerfile is working on armv7 (rapsberry 4) ?
docker build -f Dockerfile.local .
If yes, I need to work on other integration because of ffmpeg like @TerryGeng said.

[sethidden]

@azlux The command you provided builds and launches correctly (the error I posted in my OP isn't there anymore). Replaced my botamusique as systemd service with the built image. I had some problem where it froze at step 12 of the process but once I ran the build again it built correctly.

I'm not sure what do you mean regarding ffmpeg - if it built OK on the raspi won't it build at least for armv7 using docker buildx? Bullseye has access to the ffmpeg version packaged for arm in apt at least

[sethidden]

64-bit version of Raspberry Pi OS is out of beta (is stable) so it'd be a good idea to build for arm64 too.

[azlux]

On the way with ff93039

[sethidden]

Just tried out the azlux/botamusique:testing tag on the rpi 4b and it's working great :) Thank you!

docker-compse

version: "3.5"
services:
  murmur:
    container_name: murmur
    restart: always
    ports:
        - '64738:64738'
        - '64738:64738/udp'
    volumes:
      - '/mnt/ssd0/umurmur/murmur.ini:/etc/murmur.ini'
      - '/mnt/ssd0/certs:/etc/certs'
    image: sethidden/murmur
  botamusique:
    network_mode: host
    image: azlux/botamusique:testing
    container_name: botamusique
    hostname: XANA
    restart: on-failure
    expose:
      - 8181