Build fails in dockerfile

[Speshl]

Attempting to build in docker file and receiving the following error:

$ docker build --platform "linux/arm/v6" --output "./build" .
[+] Building 18.3s (12/13)
 => [internal] load build definition from Dockerfile                                                                                                                                                        0.0s
 => => transferring dockerfile: 1.52kB                                                                                                                                                                      0.0s 
 => [internal] load .dockerignore                                                                                                                                                                           0.0s 
 => => transferring context: 2B                                                                                                                                                                             0.0s 
 => resolve image config for docker.io/docker/dockerfile:1                                                                                                                                                  0.3s 
 => CACHED docker-image://docker.io/docker/dockerfile:1@sha256:39b85bbfa7536a5feceb7372a0817649ecb2724562a38360f4d6a7782a409b14                                                                             0.0s
 => [internal] load .dockerignore                                                                                                                                                                           0.0s
 => [internal] load build definition from Dockerfile                                                                                                                                                        0.0s 
 => [internal] load metadata for docker.io/crazymax/goxx:latest                                                                                                                                             0.3s 
 => [internal] load build context                                                                                                                                                                           0.2s
 => => transferring context: 50.60kB                                                                                                                                                                        0.1s 
 => [base 1/2] FROM docker.io/crazymax/goxx:latest@sha256:e39c04878d7249622367528c86d4cbedac3a8c916a2177400f055edfc36f6b51                                                                                  0.0s 
 => CACHED [base 2/2] WORKDIR /out                                                                                                                                                                          0.0s 
 => [build 1/2] RUN --mount=type=cache,sharing=private,target=/var/cache/apt   --mount=type=cache,sharing=private,target=/var/lib/apt/lists   goxx-apt-get install -y binutils gcc g++ pkg-config          16.8s 
 => ERROR [build 2/2] RUN --mount=type=bind,source=.   --mount=type=cache,target=/root/.cache   --mount=type=cache,target=/go/pkg/mod   goxx-go build -o /out/simple-cam .                                  0.7s
------
 > [build 2/2] RUN --mount=type=bind,source=.   --mount=type=cache,target=/root/.cache   --mount=type=cache,target=/go/pkg/mod   goxx-go build -o /out/simple-cam .:
#12 0.700 # github.com/vladimirvivien/go4vl/v4l2
#12 0.700 vendor/github.com/vladimirvivien/go4vl/v4l2/capability.go:51:33: could not determine kind of name for C.V4L2_CAP_IO_MC
------
executor failed running [/bin/sh -c goxx-go build -o /out/${OUTPUT} .]: exit code: 1

Using the provided dockerfile in the simple webcam example. Same code compiles and runs successfully on a Pi 4.

[vladimirvivien]

Hi @Speshl
I am not sure what the issue is. It looks like it did not install all of the necessary libs for cross compilation. I will mark this as "bug" to take a look again at that Dockerfile.

Honestly, I prefer using the Zig method of cross-compilation (MacOS -> Linux). I may end up removing the docker instructions.