Docker image based on duplicacy-autobackup but with several improvements:

• duplicacy-cron uses standard duplicacy environment variables.
• Crons use Ofelia, a modern cron service built for docker.
• Multiple cron can be configured for multiple backups.
• Backup volumes (/host) and duplicacy configuration (/duplicacy) are different. Host volume can be mounted read-only.
• Duplicacy commands can be executed easily. For example docker-compose duplicacy exec duplicacy check.
• Duplicacy commands can be executed easily. For example docker-compose duplicacy exec duplicacy check.

version: '3.6'
services:

  duplicacy:
    build:
      context: .
      dockerfile: Dockerfile
    volumes:
      - /:/host
      - ./conf/duplicacy:/duplicacy/.duplicacy
      - ./conf/ofelia:/etc/ofelia
    environment:
      DUPLICACY_SNAPSHOT_ID: mymachine
      DUPLICACY_STORAGE_URL: s3://amazon/mymachine
      DUPLICACY_REPOSITORY: /host
      DUPLICACY_PASSWORD: '***************'
      DUPLICACY_S3_ID: '***************'
      DUPLICACY_S3_SECRET: '***************'