Create webhook service to alert on Matrix

Dockerfile

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+FROM python:3.10 AS deps
+
+# Install Poetry
+RUN curl -sSL https://install.python-poetry.org | python3 - && /root/.local/bin/poetry config virtualenvs.create false
+
+# Copy Poetry data
+RUN mkdir -p /usr/src/app
+WORKDIR /usr/src/app
+COPY pyproject.toml poetry.lock ./
+
+# Generate requirements list
+RUN /root/.local/bin/poetry export -o requirements.txt
+
+
+FROM python:3.10
+
+# Install requirements
+COPY --from=deps /usr/src/app/requirements.txt /requirements.txt
+RUN pip --disable-pip-version-check install --no-cache-dir -r /requirements.txt
+
+# Set up app
+RUN mkdir -p /usr/src/app
+WORKDIR /usr/src/app
+COPY grafana_webhook_to_matrix.py ./
+
+# Set up user
+RUN mkdir -p /usr/src/app/home && \
+    useradd -d /usr/src/app/home -s /usr/sbin/nologin -u 998 appuser && \
+    chown appuser /usr/src/app/home
+
+ENV PYTHONFAULTHANDLER=1
+
+USER 998
+EXPOSE 8003
+CMD ["python3", "grafana_webhook_to_matrix.py"]