Add Dockerfile w/ GPU support.

Dockerfile

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+FROM nvidia/cuda:12.8.1-cudnn-runtime-ubuntu22.04
+
+ENV DEBIAN_FRONTEND=noninteractive
+ENV PYTHONUNBUFFERED=1
+
+WORKDIR /app
+
+ARG EXTRAS
+ARG HF_PRECACHE_DIR
+ARG HF_TKN_FILE
+
+# Install system dependencies
+#RUN apt-get update && \
+#    apt-get install -y ffmpeg git && \
+#    apt-get clean && \
+#    rm -rf /var/lib/apt/lists/*
+
+# 2) Install system dependencies + Python + pip
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+        python3 \
+        python3-pip \
+        ffmpeg \
+        git && \
+    rm -rf /var/lib/apt/lists/*
+
+RUN pip install torch torchvision torchaudio --index-url https://download.pytorch.org/whl/cu121
+
+COPY . .
+
+# Install WhisperLiveKit directly, allowing for optional dependencies
+#   Note: For gates modedls, need to add your HF toke. See README.md
+#         for more details.
+RUN if [ -n "$EXTRAS" ]; then \
+      echo "Installing with extras: [$EXTRAS]"; \
+      pip install --no-cache-dir .[$EXTRAS]; \
+    else \
+      echo "Installing base package only"; \
+      pip install --no-cache-dir .; \
+    fi
+
+# Enable in-container caching for Hugging Face models by: 
+# Note: If running multiple containers, better to map a shared
+# bucket. 
+#
+# A) Make the cache directory persistent via an anonymous volume.
+#    Note: This only persists for a single, named container. This is 
+#          only for convenience at de/test stage. 
+#          For prod, it is better to use a named volume via host mount/k8s.
+VOLUME ["/root/.cache/huggingface/hub"]
+
+# or
+# B) Conditionally copy a local pre-cache from the build context to the 
+#    container's cache via the HF_PRECACHE_DIR build-arg.
+#    WARNING: This will copy ALL files in the pre-cache location.
+
+# Conditionally copy a cache directory if provided
+RUN if [ -n "$HF_PRECACHE_DIR" ]; then \
+      echo "Copying Hugging Face cache from $HF_PRECACHE_DIR"; \
+      mkdir -p /root/.cache/huggingface/hub && \
+      cp -r $HF_PRECACHE_DIR/* /root/.cache/huggingface/hub; \
+    else \
+      echo "No local Hugging Face cache specified, skipping copy"; \
+    fi
+
+# Conditionally copy a Hugging Face token if provided
+
+RUN if [ -n "$HF_TKN_FILE" ]; then \
+      echo "Copying Hugging Face token from $HF_TKN_FILE"; \
+      mkdir -p /root/.cache/huggingface && \
+      cp $HF_TKN_FILE /root/.cache/huggingface/token; \
+    else \
+      echo "No Hugging Face token file specified, skipping token setup"; \
+    fi
+    
+# Expose port for the transcription server
+EXPOSE 8000
+
+ENTRYPOINT ["whisperlivekit-server", "--host", "0.0.0.0"]
+
+# Default args
+CMD ["--model", "tiny.en"]