install rust in the image

Author: pietroalbini

images/ubuntu/image.pkr.hcl

@@ -30,6 +30,7 @@ build {
       "./scripts/install-packages.sh",
       "./scripts/install-gha-runner.sh",
       "./scripts/install-awscli.sh",
+      "./scripts/install-rust.sh",
       "./scripts/setup-ssh.sh",
       "./scripts/setup-disk-resize.sh",
       "./scripts/setup-grub.sh",

images/ubuntu/scripts/install-rust.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+set -euo pipefail
+IFS=$'\n\t'
+
+# CI expects a Rust toolchain to be installed.
+DEBIAN_FRONTEND=noninteractive sudo apt install rustup -y
+sudo -u gha rustup toolchain install stable --profile minimal