diff --git a/Dockerfile.mxfp4 b/Dockerfile.mxfp4
index e00184f..b1ed0ff 100644
--- a/Dockerfile.mxfp4
+++ b/Dockerfile.mxfp4
@@ -256,12 +256,9 @@ RUN mkdir -p tiktoken_encodings && \
     wget -O tiktoken_encodings/cl100k_base.tiktoken "https://openaipublic.blob.core.windows.net/encodings/cl100k_base.tiktoken"
 
 # Copy artifacts from Builder Stage
-# We copy the python packages and executables
-# No need to copy source code, as it's already in the site-packages
-COPY --from=builder /workspace/wheels /workspace/wheels
-RUN --mount=type=cache,id=uv-cache,target=/root/.cache/uv \
-    uv pip install /workspace/wheels/*.whl && \
-    rm -rf /workspace/wheels
+RUN --mount=type=bind,from=builder,source=/workspace/wheels,target=/mount/wheels \
+    --mount=type=cache,id=uv-cache,target=/root/.cache/uv \
+    uv pip install /mount/wheels/*.whl
 
 # Setup Env for Runtime
 ENV TORCH_CUDA_ARCH_LIST="12.0;12.1"
diff --git a/launch-cluster.sh b/launch-cluster.sh
index 283d9df..f3e645d 100755
--- a/launch-cluster.sh
+++ b/launch-cluster.sh
@@ -144,24 +144,22 @@ for i in "${!MOD_PATHS[@]}"; do
 done
 
 # --- Auto-Detection Logic ---
-
 # Source autodiscover module
 source "$(dirname "$0")/autodiscover.sh"
 
-# Perform auto-detection
-detect_interfaces || exit 1
-
 if [[ "$SOLO_MODE" == "true" ]]; then
     if [[ -n "$NODES_ARG" ]]; then
         echo "Error: --solo is incompatible with -n/--nodes."
         exit 1
     fi
     # Solo mode: skip node detection, just get local IP
-    detect_local_ip || exit 1
+    LOCAL_IP="127.0.0.1"
     NODES_ARG="$LOCAL_IP"
     PEER_NODES=()
     echo "Solo mode enabled. Skipping node detection."
 else
+    # Perform auto-detection
+    detect_interfaces || exit 1
     detect_nodes || exit 1
 fi
 
@@ -173,8 +171,11 @@ fi
 # Split nodes into array
 IFS=',' read -r -a ALL_NODES <<< "$NODES_ARG"
 
-# Detect Head IP (Local IP)
-detect_local_ip || exit 1
+if [[ "$SOLO_MODE" != "true" ]]; then
+    # Detect Head IP (Local IP)
+    detect_local_ip || exit 1
+fi
+
 HEAD_IP="$LOCAL_IP"
 
 # Verify HEAD_IP is in ALL_NODES