standard_init_linux.go:219: exec user process caused: exec format error about docker-librespot HOT 4 OPEN

Not sure, but that seems like the kind of error message you might get if running on a binary-incompatible architecture? This is a 64-bit Intel/AMD format docker image (I think -- I haven't worked on this image in a while). Any chance you're trying to run it on an ARM platform like a raspberry pi, or something like that? If that's the case you'll need to look for an image for that architecture, or build your own image by adapting this dockerfile with a different base image and possibly slightly different package download/installs.

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Thank you, I am trying to use this on a Raspberry Pi Zero.
I'm not sure what you mean by a different base image though; I'm pretty sure I've previously used Alpine as the base for other images installed on a Raspberry Pi. I will have another look at that.
Thank you for the reply.

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When I made this image a few years ago, I don't think docker helped manage different architectures much -- you needed specific images for intel vs. arm and others. Now, I think you can build images for multiple architectures and docker manages them under the same name/tag if they exist.

So the modern images you've probably been using with Raspberry Pi like alpine are probably setup to work automatically for you, but this image is old and is not setup like that. I don't really plan on maintaining it any further at this point.

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@amitkeret you could try this image grewhit25/librespot which has an arm64 and armv7 in its manifest. Just docker pull grewhit25/librespot is sufficient to i’d your platform.
I don’t use librespot anymore so at your own risk.

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