fix: simplify to use base image's Python 3.8 for both bittensor and m…

…asa-ai

Dockerfile

@@ -6,37 +6,25 @@ ENV PIP_NO_CACHE_DIR=1 \
     PYTHONUNBUFFERED=1 \
     DEBIAN_FRONTEND=noninteractive
 
-# Install Python 3.12 and create virtualenv for masa-ai
-RUN apt-get update && \
-    apt-get install -y --no-install-recommends \
-        python3.12 \
-        python3.12-venv \
-        python3.12-dev && \
-    rm -rf /var/lib/apt/lists/* && \
-    python3.12 -m venv /venv && \
-    /venv/bin/pip install --upgrade pip
-
-# Install masa-ai in Python 3.12 venv
-RUN /venv/bin/pip install "masa-ai==0.2.7"
-
-# Install testing packages in system Python 3.8
+# Install testing packages
 RUN pip install --only-binary :all: \
     "pytest>=7.2.0" \
     "pytest-asyncio>=0.21.0"
 
 # Set up workspace
 WORKDIR /app
 
-# Set environment variables - include both Python paths
+# Set environment variables
 ENV CONFIG_PATH=/app/subnet-config.json \
     ROLE=validator \
     NETWORK=test \
-    NETUID=165 \
-    PYTHONPATH=/app:/usr/local/lib/python3.8/site-packages:/venv/lib/python3.12/site-packages \
-    PATH="/usr/local/bin:/venv/bin:$PATH"
+    NETUID=165
 
 # Copy startup directory
 COPY startup /app/startup
 
-# Use system Python 3.8 for entrypoint since it needs bittensor
+# Install masa-ai last
+RUN pip install "masa-ai==0.2.7"
+
+# Use system Python 3.8 for entrypoint
 ENTRYPOINT ["python", "-u", "/app/startup/entrypoint.py"]