more available args and dockerfile

Dockerfile

@@ -0,0 +1,16 @@
+FROM python:3.11
+
+WORKDIR /app
+COPY app.py .
+COPY requirements.txt .
+
+RUN pip install --no-cache-dir -r -r requirements.txt
+
+# Environment variables
+ENV CALDAV_URL=""
+ENV PASSWORD=""
+ENV RA_API=""
+ENV RA_USER=""
+ENV CALENDAR_NAME=""
+
+CMD ["python3", "./app.py", "$CALDAV_URL", "$CALENDAR_NAME", "$USERNAME", "$PASSWORD", "$RA_API", "$RA_USER"]