I am also new to docker and zephyr. I notice that the dockerfile sets ZEPHYR_TOOLCHAIN_VERSION=0.15.2
And I did verify that there is an 0.15.2 2 SDK in /usr/local
I tried to prune, and set it to 0.16.3 but then the container image fails to build.
Can you guys look into pushing a fix to the app-accelerator project ? my host is X86 running windows, if that matters.