fix: remove warnings in build process (#3463)

Signed-off-by: Anant Sharma <anants@nvidia.com>

container/Dockerfile

@@ -79,7 +79,6 @@ RUN if [ "$USE_SCCACHE" = "true" ]; then \
 # Set SCCACHE environment variables
 ENV SCCACHE_BUCKET=${USE_SCCACHE:+${SCCACHE_BUCKET}} \
     SCCACHE_REGION=${USE_SCCACHE:+${SCCACHE_REGION}} \
-    SCCACHE_S3_KEY_PREFIX=${USE_SCCACHE:+${ARCH}} \
     RUSTC_WRAPPER=${USE_SCCACHE:+sccache} \
     CMAKE_C_COMPILER_LAUNCHER=${USE_SCCACHE:+sccache} \
     CMAKE_CXX_COMPILER_LAUNCHER=${USE_SCCACHE:+sccache} \
@@ -169,6 +168,7 @@ ENV PATH=/usr/local/bin/etcd/:$PATH
 # Build and install UCX
 RUN --mount=type=secret,id=aws-key-id,env=AWS_ACCESS_KEY_ID \
     --mount=type=secret,id=aws-secret-id,env=AWS_SECRET_ACCESS_KEY \
+    export SCCACHE_S3_KEY_PREFIX=${SCCACHE_S3_KEY_PREFIX:-${ARCH}} && \
     rm -rf /opt/hpcx/ucx && \
     rm -rf /usr/local/ucx && \
     echo "Building UCX with reference $NIXL_UCX_REF" && \
@@ -204,9 +204,9 @@ RUN --mount=type=secret,id=aws-key-id,env=AWS_ACCESS_KEY_ID \
     rm -rf ucx
 
 # UCX environment variables
-ENV CPATH=/usr/include:$CPATH \
+ENV CPATH=/usr/include \
     PATH=/usr/bin:/usr/local/ucx/bin:$PATH \
-    PKG_CONFIG_PATH=/usr/lib/pkgconfig:$PKG_CONFIG_PATH
+    PKG_CONFIG_PATH=/usr/lib/pkgconfig
 
 ##################################
 ########## NIXL Setup ############
@@ -333,7 +333,6 @@ RUN if [ "$USE_SCCACHE" = "true" ]; then \
 # Set SCCACHE environment variables
 ENV SCCACHE_BUCKET=${USE_SCCACHE:+${SCCACHE_BUCKET}} \
     SCCACHE_REGION=${USE_SCCACHE:+${SCCACHE_REGION}} \
-    SCCACHE_S3_KEY_PREFIX=${USE_SCCACHE:+${ARCH}} \
     RUSTC_WRAPPER=${USE_SCCACHE:+sccache}
 
 # Copy source code (order matters for layer caching)
@@ -344,6 +343,7 @@ COPY components/ /opt/dynamo/components/
 # Build wheels
 RUN --mount=type=secret,id=aws-key-id,env=AWS_ACCESS_KEY_ID \
     --mount=type=secret,id=aws-secret-id,env=AWS_SECRET_ACCESS_KEY \
+    export SCCACHE_S3_KEY_PREFIX=${SCCACHE_S3_KEY_PREFIX:-${ARCH}} && \
     uv build --wheel --out-dir /opt/dynamo/dist && \
     cd /opt/dynamo/lib/bindings/python && \
     uv pip install maturin[patchelf] && \
@@ -366,8 +366,7 @@ FROM base AS dev
 
 # Application environment variables
 ENV DYNAMO_HOME=/opt/dynamo \
-    CARGO_TARGET_DIR=/opt/dynamo/target \
-    PYTHONPATH=/opt/dynamo:$PYTHONPATH
+    CARGO_TARGET_DIR=/opt/dynamo/target
 
 WORKDIR /opt/dynamo
 

container/Dockerfile.vllm

@@ -129,7 +129,6 @@ RUN if [ "$USE_SCCACHE" = "true" ]; then \
 # Set environment variables - they'll be empty strings if USE_SCCACHE=false
 ENV SCCACHE_BUCKET=${USE_SCCACHE:+${SCCACHE_BUCKET}} \
     SCCACHE_REGION=${USE_SCCACHE:+${SCCACHE_REGION}} \
-    SCCACHE_S3_KEY_PREFIX=${USE_SCCACHE:+${ARCH}} \
     CMAKE_C_COMPILER_LAUNCHER=${USE_SCCACHE:+sccache} \
     CMAKE_CXX_COMPILER_LAUNCHER=${USE_SCCACHE:+sccache} \
     CMAKE_CUDA_COMPILER_LAUNCHER=${USE_SCCACHE:+sccache}
@@ -138,6 +137,7 @@ RUN --mount=type=bind,source=./container/deps/,target=/tmp/deps \
     --mount=type=cache,target=/root/.cache/uv \
     --mount=type=secret,id=aws-key-id,env=AWS_ACCESS_KEY_ID \
     --mount=type=secret,id=aws-secret-id,env=AWS_SECRET_ACCESS_KEY \
+    export SCCACHE_S3_KEY_PREFIX=${SCCACHE_S3_KEY_PREFIX:-${ARCH}} && \
         cp /tmp/deps/vllm/install_vllm.sh /tmp/install_vllm.sh && \
         chmod +x /tmp/install_vllm.sh && \
         /tmp/install_vllm.sh --editable --vllm-ref $VLLM_REF --max-jobs $MAX_JOBS --arch $ARCH --installation-dir /opt ${DEEPGEMM_REF:+--deepgemm-ref "$DEEPGEMM_REF"} ${FLASHINF_REF:+--flashinf-ref "$FLASHINF_REF"} --torch-backend $TORCH_BACKEND --cuda-version $CUDA_VERSION && \
@@ -236,7 +236,7 @@ $LD_LIBRARY_PATH
 
 # DeepGemm runs nvcc for JIT kernel compilation, however the CUDA include path
 # is not properly set for complilation. Set CPATH to help nvcc find the headers.
-ENV CPATH=/usr/local/cuda/include:$CPATH
+ENV CPATH=/usr/local/cuda/include
 
 ### VIRTUAL ENVIRONMENT SETUP ###