Update Rust build system: use rustup with musl target for static builds

build/Dockerfile.alpine

@@ -43,7 +43,14 @@ RUN apk add --no-cache \
     grep \
     findutils \
     # JSON processing for GitHub API
-    jq
+    jq \
+    # Rustup for proper Rust musl builds
+    rustup
+
+# Setup Rust toolchain for musl builds
+RUN rustup-init -y --default-toolchain stable && \
+    . ~/.cargo/env && \
+    rustup target add x86_64-unknown-linux-musl
 
 # Create directories
 RUN mkdir -p /build/initramfs /build/kernel /build/output /build/github /build/configs/zinit /mnt/zinit

build/Dockerfile.cached

@@ -33,10 +33,15 @@ RUN apk add --no-cache \
     grep \
     findutils \
     jq \
-    # Go and Rust for source compilation
+    # Go for source compilation
     go \
-    rust \
-    cargo
+    # Rustup for proper Rust musl builds
+    rustup
+
+# Setup Rust toolchain for musl builds
+RUN rustup-init -y --default-toolchain stable && \
+    . ~/.cargo/env && \
+    rustup target add x86_64-unknown-linux-musl
 
 # Create standard directories
 RUN mkdir -p /build/initramfs /build/kernel /build/output /build/github /build/configs/zinit /mnt/zinit /build/source /build/cache

scripts/compile-components.sh

@@ -51,29 +51,21 @@ build_rust_component() {
     fi
     
     # Build the project
-    echo "    Compiling with cargo..."
-    if command -v cargo >/dev/null; then
-        cargo build --release
+    echo "    Compiling with cargo for musl target..."
+    
+    # Source cargo environment
+    . ~/.cargo/env
+    
+    # Build with musl target for static linking
+    cargo build --release --target x86_64-unknown-linux-musl
     
     # Install binary to Alpine root
     mkdir -p "$ALPINE_ROOT$install_path"
-        cp "target/release/$binary_name" "$ALPINE_ROOT$install_path/"
+    cp "target/x86_64-unknown-linux-musl/release/$binary_name" "$ALPINE_ROOT$install_path/"
     chmod +x "$ALPINE_ROOT$install_path/$binary_name"
     
-        echo "    Success: $install_path/$binary_name installed to Alpine root"
+    echo "    Success: $install_path/$binary_name installed to Alpine root (musl static)"
     return 0
-    else
-        echo "    Error: cargo not found - installing Rust..."
-        apk add --no-cache rust cargo
-        cargo build --release
-        
-        mkdir -p "$ALPINE_ROOT$install_path"
-        cp "target/release/$binary_name" "$ALPINE_ROOT$install_path/"
-        chmod +x "$ALPINE_ROOT$install_path/$binary_name"
-        
-        echo "    Success: $install_path/$binary_name installed to Alpine root"
-        return 0
-    fi
 }
 
 # Function to build Go project from submodule