Create Dockerfile for Espeak-ng installation

Dockerfile

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+FROM python:3.9-slim
+
+
+RUN useradd -m -u 1000 user
+USER user
+ENV HOME=/home/user \
+    PATH=/home/user/.local/bin:$PATH
+WORKDIR $HOME/app
+
+COPY --chown=user . $HOME/app
+COPY ./requirements.txt ~/app/requirements.txt
+
+USER root
+RUN rm /var/lib/apt/lists/* -vf
+RUN apt-get clean
+RUN apt-get update
+RUN apt-get upgrade
+RUN apt-get install -y wget zip unzip uvicorn espeak-ng
+USER user
+COPY . .
+USER root
+RUN chmod 777 ~/app/*
+USER user
+
+RUN pip3 install -r requirements.txt
+
+CMD ["python", "app.py"]