Update Dockerfile

Dockerfile

@@ -1,19 +1,26 @@
 FROM python:3.10.9
 
-# Copy all files to the container
-COPY . .
+# Create a non-root user and group with a specified UID and GID
+RUN addgroup --gid 1001 appgroup && adduser --uid 1001 --gid 1001 --disabled-password --gecos "" appuser
 
-# Set the working directory
-WORKDIR /
-
-# Create the directories with appropriate permissions
+# Create directories with appropriate permissions and change ownership
 RUN mkdir -m 777 /tmp/NUMBA_CACHE_DIR /tmp/MPLCONFIGDIR
+RUN chown -R appuser:appgroup /tmp/NUMBA_CACHE_DIR /tmp/MPLCONFIGDIR
 
 # Set environment variables
 ENV NUMBA_CACHE_DIR=/tmp/NUMBA_CACHE_DIR/
 ENV MPLCONFIGDIR=/tmp/MPLCONFIGDIR/
 
-# Install virtualenv
+# Copy all files to the container
+COPY --chown=appuser:appgroup . .
+
+# Set the working directory
+WORKDIR /
+
+# Switch to the non-root user
+USER appuser
+
+# Install virtualenv and set up the virtual environment
 RUN python -m venv /opt/venv
 
 # Activate the virtual environment and install requirements