basic version

docker-compose.yml

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+version: '3.8'
+
+services:
+    covid-collector:
+        build:
+            context: ./image
+        restart: always
+        container_name: covid-collector 
+        volumes:
+            - "./data:/root/data"
+

image/Dockerfile

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+FROM python:3.9-buster
+
+RUN apt-get update; apt-get install --no-install-recommends cron
+
+RUN touch /var/log/cron.log
+COPY collect.sh /root/collect.sh
+RUN echo '*/2 *    * * *   root    /root/collect.sh' >> /etc/crontab
+
+CMD ["/bin/bash", "-c", "cron && tail -f /var/log/cron.log"]
+

image/collect.sh

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+!/bin/bash
+
+# download Covid-Cases for Austria based on age groupes
+wget --output-document=/root/data/CovidFaelle_Altersgruppe-$(date +%F_%T).csv https://covid19-dashboard.ages.at/data/CovidFaelle_Altersgruppe.csv
+
+