feat: docker image support

Dockerfile

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+FROM python:3.10-bookworm as builder
+
+WORKDIR /builder
+
+RUN addgroup --gid 1000 user
+RUN adduser --disabled-password --gecos '' --uid 1000 --gid 1000 user
+
+ENV USER=user
+ENV HOME=/home/user
+
+RUN python3 -mvenv venv && ./venv/bin/pip install --no-cache-dir --upgrade pip
+
+COPY requirements.txt requirements.txt
+
+RUN ./venv/bin/pip install -U --no-cache-dir -r requirements.txt
+
+FROM python:3.10-bookworm as runner
+
+WORKDIR /app
+
+RUN addgroup --gid 1000 user
+RUN adduser --disabled-password --gecos '' --uid 1000 --gid 1000 user
+
+ENV USER=user
+ENV HOME=/home/user
+
+COPY --from=builder --chown=user:user /builder/venv /app/venv
+
+COPY --chown=user:user app.py app.py 
+
+RUN chown -R user:user /app && chown -R user:user /home/user
+
+USER user
+
+ENV ENABLE_API_TOKEN=false
+ENV API_TOKEN=
+ENV APP_ENV=production
+ENV LISTEN_HOST=0.0.0.0
+ENV LISTEN_PORT=5000
+ENV TOPIC_CLASSIFICATION_MODEL="cardiffnlp/twitter-roberta-base-dec2021-tweet-topic-multi-all"
+ENV ENABLE_CACHE=false
+ENV CACHE_DURATION_SECONDS=60
+ENV TORCH_DEVICE=auto
+
+EXPOSE $LISTEN_PORT
+
+ENTRYPOINT [ "./venv/bin/python" , "app.py" ]