Add images for ARM architecture

[patrickjmcd]

Currently the dockerhub images are amd64 only. Using buildx would allow multi-architecture builds.

For example, I was able to clone this repo and run

docker buildx build --platform linux/arm/v7,linux/arm64/v8,linux/amd64 --tag patrickjmcd/lidarr:latest --push .

to build a multi-arch image

[TheCaptain989]

I had multi-architecture on my list. I’m using the Docker Hub auto build though, so I’m going to have to figure out how to do it that way. Now that I know it’s needed I’ll spend time to work it out.

[patrickjmcd]

Happy to help out if you need it

[TheCaptain989]

I’ll take you up on that! I’m guessing it a change to the hooks build?
Anyway, I can add you to the project if you want to take it.

[patrickjmcd]

Sounds great. I've never used hooks before, but I'm happy to learn

[TheCaptain989]

I spent a bit of time playing with this, trying to make it work with Docker Cloud builds. I tried just altering the build hook, but that just generates an error message on DockerHub. I managed to get something working using GitHub Workflows, but it complicates other things.
I've added you as a contributor. Maybe you'll have better luck than I did.

[TheCaptain989]

I just learned about Docker Mods. I think this is going to be a better way to go overall. I'm going to start playing with this is my other repo first, but I'll get back to here once I get everything working.

[TheCaptain989]

@patrickjmcd, please try my latest Docker Mods build here. Instead of the :latest tag, though, use :arm64. I don't have an ARM system to test this on, but I'm very curious if this works for you.

[patrickjmcd]

I'll give this a shot this evening!

[patrickjmcd]

I tried running the image on an arm64 machine and got Error: failed to generate container "fda4b2f1c8cdb035c21dd5b04fe1283e7b46ba2bdcc74a7aaadaaa2cdc7cf3e4" spec: │ │ no command specified

[TheCaptain989]

@patrickjmcd, you used the original Linuxserver.io container with the DOCKER_MODS variable, right? Just asking because this is a totally different method than before.

[TheCaptain989]

Just to tie this one up, I spoke with the guys at Linuxserver.io, and they got me me realize that with their Docker Mods there's no reason to try to build other architectures for simple script mods (which this is). The base image is multi-arch, and then the mod is dynamically pulled and my script does what is needs on whatever architecture it is running on (x86, Arm, whatever is supported by the base image).
I'm going to rework my Travis CI YAML build script to avoid confusion.