diff --git a/build_container.sh b/build_container.sh
index 625cf7f..16e5153 100755
--- a/build_container.sh
+++ b/build_container.sh
@@ -22,7 +22,6 @@ DEBIAN_FRONTEND="noninteractive" apt-get install --no-install-recommends -y \
     libglm-dev libstb-dev libc6-dev \
     debhelper-compat libdbus-1-dev libglib2.0-dev meson ninja-build dbus \
     libvirglrenderer1 libvirglrenderer-dev pipewire libpipewire-0.3-dev \
-    lsof \
     podman
 
 # `riscv64` specific dependencies
@@ -78,6 +77,12 @@ if [ "$ARCH" != "riscv64" ]; then
     rustup target add $ARCH-unknown-linux-musl $ARCH-unknown-none
 fi
 
+# The below are only used for compile-testing via cargo check.
+# It suffices to do that on _one_ architecture.
+if [ "$ARCH" == "x86_64" ]; then
+    rustup target add aarch64-apple-darwin x86_64-pc-windows-gnu
+fi
+
 cargo install cargo-llvm-cov
 
 # Install the codecov.io uploader. Not available on riscv64, so skip there