Wrote non-root Dockerfile

Dockerfile

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+FROM python:3.9 AS builder
+
+WORKDIR /wheels
+
+# Update pip & build the wheels
+COPY ./setup.cfg ./
+RUN pip wheel -e .
+
+
+FROM python:3.9-slim
+
+# Switch to non-root user
+RUN groupadd -r runner && \
+    useradd -mrg runner runner
+
+# Install the generated wheels
+COPY --from=builder /wheels /wheels
+RUN pip install \
+        --no-cache-dir \
+        --no-warn-script-location \
+        -f /wheels \
+        -e /wheels && \
+    rm -rf /wheels
+
+# Switch to non-root user
+USER runner
+
+# Copy source files
+WORKDIR /usr/src/app
+COPY --chown=runner:runner ./app ./app
+COPY --chown=runner:runner setup.cfg setup.py ./
+
+ENTRYPOINT ["python"]
+CMD ["app"]