d66f0d65c3
- backup/Dockerfile: Alpine 3.21 + postgresql-client + dcron - backup/backup.sh: pg_dump -> MD5-Checksum-Vergleich (skip bei unveränderter DB) -> gzip-komprimiertes Backup mit Timestamp -> Rotation: älteste .sql.gz löschen bis Gesamtgröße < 1 GB - docker-compose.yml: neuer Service 'backup', Volume 'backup_data' - Cronjob: täglich 03:00 UTC
14 lines
437 B
Docker
14 lines
437 B
Docker
FROM alpine:3.21
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# Install PostgreSQL client and dcron (lightweight cron daemon)
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RUN apk add --no-cache postgresql-client dcron
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COPY backup.sh /usr/local/bin/backup.sh
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RUN chmod +x /usr/local/bin/backup.sh
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# Crontab: run backup daily at 03:00 UTC
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RUN echo "0 3 * * * /usr/local/bin/backup.sh >> /var/log/backup.log 2>&1" \
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> /etc/crontabs/root
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# crond -f: run in foreground; -l 2: log level notice
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CMD ["crond", "-f", "-l", "2"]
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