Update devcontainer with tools for musl

Signed-off-by: James Sturtevant <jsturtevant@gmail.com>

Author: jsturtevant

.devcontainer/Dockerfile

@@ -22,7 +22,8 @@ RUN apt-get update \
         make \
         software-properties-common \
         sudo \
-        wget
+        wget \
+        musl-tools
 
 ARG LLVM_VERSION=18
 
@@ -54,7 +55,9 @@ ARG RUST_TOOLCHAIN=1.86
 RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y \
     && rustup default ${RUST_TOOLCHAIN} \
     && rustup target add x86_64-unknown-linux-gnu \
+    && rustup target add x86_64-unknown-linux-musl \
     && rustup target add x86_64-unknown-none      \
     && rustup toolchain add nightly-x86_64-unknown-linux-gnu \
-    && cargo install just
-
+    && rustup toolchain add nightly-x86_64-unknown-linux-musl \
+    && cargo install just \
+    cargo install cross --locked --version 0.2.5