refact: improve docker build with user & poetry

Dockerfile

 
-FROM python:3.10-slim
+FROM python:3.10-slim as base
 LABEL maintainer="David Trattnig <david.trattnig@subsquare.at>"
 
-# System Dependencies
+ENV UID=1000
+ENV GID=1000
+ENV USER=app
+
+# Configure Poetry
+ENV POETRY_VERSION=1.3.2
+ENV POETRY_HOME=/opt/poetry
+ENV POETRY_VENV=/opt/poetry-venv
+ENV POETRY_CACHE_DIR=/opt/.cache
 
+# System Dependencies
 RUN apt-get update && apt-get -y install \
       apt-utils \
       build-essential \
       libpq-dev \
       pip
-RUN python3 -m pip install --upgrade pip
-RUN pip install poetry
 
-# Construct Image
+# Setup Poetry
+RUN python3 -m venv $POETRY_VENV \
+    && $POETRY_VENV/bin/pip install -U pip setuptools \
+    && $POETRY_VENV/bin/pip install poetry==${POETRY_VERSION}
+ENV PATH="${PATH}:${POETRY_VENV}/bin"
 
-RUN mkdir -p /srv
-RUN mkdir -p /srv/src
-RUN mkdir -p /srv/config
-
-COPY src /srv/src
-COPY config/sample.engine.docker.ini /etc/aura/engine.ini
-COPY pyproject.toml /srv
-COPY poetry.lock /srv
-COPY README.md /srv
-COPY Makefile /srv
+# Base Structure
+RUN mkdir -p /srv/src/aura_engine /srv/config /srv/logs /var/audio /etc/aura
+COPY pyproject.toml poetry.lock README.md Makefile .env /srv/
 
 WORKDIR /srv
-RUN poetry install --without dev --no-interaction
 
-# Start Service
+# Init Application
+COPY ./src/aura_engine /srv/src/aura_engine
+COPY config/sample.engine.docker.ini /etc/aura/engine.ini
+RUN poetry install --no-interaction --no-ansi
+
+# Update Permissions
+RUN set -e \
+      && adduser --home /srv --no-create-home --system --uid ${UID} --group ${USER} \
+      && chown -R ${UID}:${GID} /srv /etc/aura /var/audio
 
 ENTRYPOINT ["make"]
-CMD ["run"]
+CMD ["run"]
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