Receiving blank messages with discord notifier

[w1ld3r]

Describe the bug

Using the follwong docker-compose.yml, I'm getting blank message on discord:

version: '3.7'

services:
  watchtower:
    container_name: watchtower
    image: containrrr/watchtower
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock:ro
    ports:
      - "8080:8080"
    environment:
      WATCHTOWER_DEBUG: true
      WATCHTOWER_LOG_LEVEL: debug
      WATCHTOWER_POLL_INTERVAL: 60
      WATCHTOWER_HTTP_API_METRICS: true
      WATCHTOWER_HTTP_API_TOKEN: demotoken
      WATCHTOWER_LABEL_ENABLE: true
      WATCHTOWER_CLEANUP: true
      WATCHTOWER_NOTIFICATION_REPORT: true
      WATCHTOWER_NOTIFICATIONS: shoutrrr
      WATCHTOWER_NOTIFICATIONS_LEVEL: info
      WATCHTOWER_NOTIFICATION_URL: "discord://token@id"
      WATCHTOWER_NOTIFICATION_TEMPLATE: |
        {{- if .Report -}}
          {{- with .Report -}}
        {{len .Scanned}} Scanned, {{len .Updated}} Updated, {{len .Failed}} Failed
              {{- range .Updated}}
        - {{.Name}} ({{.ImageName}}): {{.CurrentImageID.ShortID}} updated to {{.LatestImageID.ShortID}}
              {{- end -}}
              {{- range .Fresh}}
        - {{.Name}} ({{.ImageName}}): {{.State}}
            {{- end -}}
            {{- range .Skipped}}
        - {{.Name}} ({{.ImageName}}): {{.State}}: {{.Error}}
            {{- end -}}
            {{- range .Failed}}
        - {{.Name}} ({{.ImageName}}): {{.State}}: {{.Error}}
            {{- end -}}
          {{- end -}}
        {{- else -}}
          {{range .Entries -}}{{.Message}}{{"\n"}}{{- end -}}
        {{- end -}}

#      WATCHTOWER_ROLLING_RESTART: "true"
#      WATCHTOWER_MONITOR_ONLY: "true"


  prometheus:
    container_name: prometheus
    image: prom/prometheus
    volumes:
      - ./prometheus/:/etc/prometheus/
      - prometheus:/prometheus/
    ports:
      - "9091:9090"
    labels:
      - "com.centurylinklabs.watchtower.enable=true"

  grafana:
    container_name: grafana
    image: grafana/grafana
    ports:
      - "3000:3000"
    environment:
      GF_INSTALL_PLUGINS: grafana-clock-panel,grafana-simple-json-datasource
    volumes:
      - grafana:/var/lib/grafana
      - ./grafana:/etc/grafana/provisioning
    labels:
      - "com.centurylinklabs.watchtower.enable=true"

volumes:
  prometheus: {}
  grafana: {}

Steps to reproduce

1. docker-compose up -d --build

Expected behavior

Receive messages in discord using shoutrrr

Screenshots

No response

Environment

• Kernel 6.1.0-11-amd64
• Docker version 20.10.24+dfsg1, build 297e128

Your logs

watchtower  | time="2023-08-21T16:06:28+02:00" level=debug msg="Sleeping for a second to ensure the docker api client has been properly initialized
."
watchtower  | time="2023-08-21T16:06:29+02:00" level=debug msg="Making sure everything is sane before starting"
watchtower  | time="2023-08-21T16:06:29+02:00" level=debug msg="Retrieving running containers"
watchtower  | time="2023-08-21T16:06:29+02:00" level=debug msg="There are no additional watchtower containers"
watchtower  | time="2023-08-21T16:06:29+02:00" level=info msg="Watchtower v1.5.3-70-g0d2eba1"
watchtower  | time="2023-08-21T16:06:29+02:00" level=info msg="Using notifications: discord"
watchtower  | time="2023-08-21T16:06:29+02:00" level=info msg="Only checking containers using enable label"
watchtower  | time="2023-08-21T16:06:29+02:00" level=info msg="Scheduling first run: 2023-08-21 16:07:29 +0200 CEST"
watchtower  | time="2023-08-21T16:06:29+02:00" level=info msg="Note that the first check will be performed in 59 seconds"

Additional context

No response

[github-actions]

Hi there! 👋🏼 As you're new to this repo, we'd like to suggest that you read our code of conduct as well as our contribution guidelines. Thanks a bunch for opening your first issue! 🙏

[w1ld3r]

Doing some debug, I can get message (using LocalLoc) before it's behing sent to Router.Send. So error should comme from shoutrrr ?