Add docker support

Dockerfile

@@ -0,0 +1,17 @@
+FROM python:3.11.1-alpine3.17
+
+LABEL Maintainer="serega404"
+
+WORKDIR /app
+
+COPY main.py main.py
+COPY ./requirements.txt requirements.txt
+RUN pip3 install -r requirements.txt
+
+COPY crontab /etc/cron.d/crontab
+RUN chmod 0644 /etc/cron.d/crontab
+
+RUN /usr/bin/crontab /etc/cron.d/crontab
+
+# run crond as main process of container
+CMD ["/usr/sbin/crond", "-f"]