Watchtower

Introduction

Watchtower is a container-based solution for automating Docker container base image updates.

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Instructions

Pre-requisites

• Docker Socket Proxy

1. Docker Compose

containers/watchtower/docker-compose.yml

---
services:
  watchtower:
    container_name: watchtower
    image: containrrr/watchtower:latest
    restart: always
    networks:
      - socket
    environment:
      - TZ=Europe/Brussels
      - WATCHTOWER_CLEANUP=true
      - WATCHTOWER_LABEL_ENABLE=true
      - WATCHTOWER_INCLUDE_RESTARTING=true
      - WATCHTOWER_SCHEDULE=0 0 0 * * *
      - DOCKER_HOST=tcp://socket-proxy:2375
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
    labels:
      - com.centurylinklabs.watchtower.enable=true
 
networks:
  socket:
    external: true

Tip

Enable watchtower monitoring on containers using the following label:

com.centurylinklabs.watchtower.enable=true

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Sources

• Watchtower