Error when creating config

[caillou]

Running the following command yields an error:

$ docker run \
  --name=noip \
  -ti \
  -v "/path/to/noip/config:/usr/local/etc/" \
  hypriot/rpi-noip \
  noip2 -C

standard_init_linux.go:207: exec user process caused "exec format error"

I am running this on Ubuntu Server 18.10 with Docker 18.09.3, build 774a1f4.

[StefanScherer]

This image is for linux/arm 32bit machines like the Raspberry Pi. On other Linux machines you typically get this exec format error.

[caillou]

@StefanScherer now that makes sense ;)

Should I open a PR with an edit of the Readme.md to avoid confusion for future users of the container?