reduce artifact retention to 3 days and add CUDA_HOME env variable

.github/workflows/cuda-build.yml

@@ -132,4 +132,4 @@ jobs:
                   name: ${{ format('quantus-miner-cuda-{0}-sm-{1}', steps.extract.outputs.short_tag, matrix.sm) }}
                   path: ${{ steps.extract.outputs.bin_path }}
                   if-no-files-found: error
-                  retention-days: 14
+                  retention-days: 3

Containerfile

@@ -37,6 +37,7 @@ RUN apt-get update && \
 # Install Rust (stable)
 ENV RUSTUP_HOME=/opt/rustup \
     CARGO_HOME=/opt/cargo \
+    CUDA_HOME=/usr/local/cuda \
     PATH=/opt/cargo/bin:/usr/local/cuda/bin:${PATH}
 RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs \
     | sh -s -- -y --profile minimal --default-toolchain stable && \