Docker hub authentication with environment variables

[lordraiden]

It is possible to configure docker hub auth credentials via environmental variables?

  watchtower:
    container_name: ${watchtower_name}
    image: nickfedor/watchtower
    <<: *config
    networks:
      eth4.25:
        ipv4_address: ${watchtower_ip}
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
    # - ${dockerdir}/Watchtower:/config
    environment:
      - TZ
      - WATCHTOWER_CLEANUP=true
      - WATCHTOWER_INCLUDE_RESTARTING=true
      - WATCHTOWER_INCLUDE_STOPPED=true
      - WATCHTOWER_REVIVE_STOPPED=false
      - WATCHTOWER_TIMEOUT=60s
      - WATCHTOWER_LABEL_ENABLE=true
      - WATCHTOWER_LIFECYCLE_HOOKS=true
      - WATCHTOWER_NOTIFICATIONS=shoutrrr
      - WATCHTOWER_NOTIFICATION_URL
    # - WATCHTOWER_DEBUG=true
      - WATCHTOWER_LOG_LEVEL=info
      - WATCHTOWER_SCHEDULE=0 0 1 * * *
    secrets:
      - WATCHTOWER_NOTIFICATION_URL

[nicholas-fedor]

Yes, as noted in Watchtower's Usage Overview, Watchtower takes the REPO_USER and REPO_PASS environment variables and encodes them into a base64-encoded string for HTTP basic authentication.

Definitely take note of the information regarding 2FA, if applicable. The Private Registry documentation also provides valuable information on the topic.

Here's an example using your provided config:

version: "3.4"
services:
  watchtower:
    container_name: ${watchtower_name}
    image: nickfedor/watchtower
    networks:
      eth4.25:
        ipv4_address: ${watchtower_ip}
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
    environment:
      - TZ
      - WATCHTOWER_CLEANUP=true
      - WATCHTOWER_INCLUDE_RESTARTING=true
      - WATCHTOWER_INCLUDE_STOPPED=true
      - WATCHTOWER_REVIVE_STOPPED=false
      - WATCHTOWER_TIMEOUT=60s
      - WATCHTOWER_LABEL_ENABLE=true
      - WATCHTOWER_LIFECYCLE_HOOKS=true
      - WATCHTOWER_NOTIFICATIONS=shoutrrr
      - WATCHTOWER_NOTIFICATION_URL
      - WATCHTOWER_LOG_LEVEL=info
      - WATCHTOWER_SCHEDULE=0 0 1 * * *
      - REPO_USER=${DOCKERHUB_USERNAME}
      - REPO_PASS=${DOCKERHUB_PASSWORD}
    secrets:
      - WATCHTOWER_NOTIFICATION_URL

[nicholas-fedor]

Closing this discussion as it's old and inactive.