Install rls in .gitpod.Dockerfile

.gitpod.Dockerfile

@@ -3,10 +3,11 @@ FROM gitpod/workspace-full
 USER gitpod
 
 # Update Rust to the latest version
-RUN rm -rf ~/.rustup && ~/.cargo/bin/rustup update stable
-
-# Set up wasm-pack and wasm32-unknown-unknown for rustpython_wasm
-RUN export PATH=$HOME/.cargo/bin:$PATH && \
+RUN rm -rf ~/.rustup && \
+    export PATH=$HOME/.cargo/bin:$PATH && \
+    rustup update stable && \
+    rustup component add rls && \
+    # Set up wasm-pack and wasm32-unknown-unknown for rustpython_wasm
     curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh && \
     rustup target add wasm32-unknown-unknown