Bugfix: mqtt wont connect #1

Improvement: Add Dockerfile #2, compose, License, github workflow

Dockerfile

@@ -0,0 +1,27 @@
+# Use an official Python runtime as a parent image
+FROM python:3.11-slim-buster
+
+# permissions and nonroot user for tightened security
+RUN adduser --disabled-login nonroot
+RUN mkdir /home/app/ && chown -R nonroot:nonroot /home/app
+RUN mkdir -p /var/log/flask-app && touch /var/log/flask-app/flask-app.err.log && touch /var/log/flask-app/flask-app.out.log
+RUN chown -R nonroot:nonroot /var/log/flask-app
+WORKDIR /home/app
+USER nonroot
+
+# copy all the files to the container
+COPY --chown=nonroot:nonroot . .
+
+# venv
+ENV VIRTUAL_ENV=/home/app/venv
+
+# python setup
+RUN python -m venv $VIRTUAL_ENV
+ENV PATH="$VIRTUAL_ENV/bin:$PATH"
+RUN export FLASK_APP=src/app.py
+RUN pip install --no-cache-dir -r requirements.txt
+
+# define the port number the container should expose
+EXPOSE 8000
+
+CMD ["gunicorn", "-w", "4", "-b", "0.0.0.0:8000", "app:app"]