Set up a docker image

- Added .dockerignore, dockerfile and compose.yml + .gitea directory

dockerfile

@@ -0,0 +1,11 @@
+FROM python:3.13-slim
+
+WORKDIR /app
+
+COPY . .
+
+RUN apt-get update && apt-get install -y --no-install-recommends libpq-dev build-essential
+
+RUN pip install --no-cache-dir -r requirements.txt
+
+CMD ["python", "src/main.py"]