doc(BUILD): add `x86_64-unknown-linux-gnu` nightly toolchain
Only adding `x86_64-unknown-linux-musl` would build the `enarx` binary
with the musl toolchain. Add the `x86_64-unknown-linux-gnu` nightly
toolchain to get the speed of glibc.
@@ -45,7 +45,7 @@ to source that file prior to building `enarx`.
$ curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
$ source $HOME/.cargo/env
- $ rustup toolchain install nightly --allow-downgrade -t x86_64-unknown-linux-musl
+ $ rustup toolchain install nightly --allow-downgrade -t x86_64-unknown-linux-musl,x86_64-unknown-linux-gnu
## Build
