flatcar-hcloud/examples/docker-compose.yaml at master · slauger/flatcar-hcloud · GitHub

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---
# Butane Config for Flatcar Container Linux
# Example: Running Docker Compose stack as systemd service
variant: flatcar
version: 1.0.0

passwd:
  users:
    - name: core
      ssh_authorized_keys:
        - ssh-rsa AAAAB3... user@example.com  # Replace with your SSH public key

storage:
  files:
    - path: /etc/hostname
      mode: 0644
      contents:
        source: http://169.254.169.254/hetzner/v1/metadata/hostname

    # Docker Compose file
    - path: /opt/docker-compose.yml
      mode: 0644
      contents:
        inline: |
          version: '3.8'

          services:
            # Nginx web server
            web:
              image: nginx:alpine
              ports:
                - "80:80"
                - "443:443"
              volumes:
                - ./html:/usr/share/nginx/html:ro
              restart: always

            # Redis cache
            redis:
              image: redis:alpine
              ports:
                - "6379:6379"
              restart: always

            # PostgreSQL database
            db:
              image: postgres:16-alpine
              environment:
                POSTGRES_PASSWORD: changeme
                POSTGRES_USER: myapp
                POSTGRES_DB: myapp
              volumes:
                - db-data:/var/lib/postgresql/data
              restart: always

          volumes:
            db-data:

    # Example application HTML
    - path: /opt/html/index.html
      mode: 0644
      contents:
        inline: |
          <!DOCTYPE html>
          <html>
          <head>
              <title>Flatcar on Hetzner Cloud</title>
          </head>
          <body>
              <h1>Hello from Flatcar Container Linux!</h1>
              <p>Running on Hetzner Cloud with Docker Compose</p>
          </body>
          </html>

systemd:
  units:
    # Enable Docker
    - name: docker.service
      enabled: true

    # Docker Compose service
    - name: docker-compose-app.service
      enabled: true
      contents: |
        [Unit]
        Description=Docker Compose Application
        After=docker.service
        Requires=docker.service

        [Service]
        Type=oneshot
        RemainAfterExit=yes
        WorkingDirectory=/opt
        ExecStartPre=/usr/bin/docker-compose -f /opt/docker-compose.yml pull
        ExecStart=/usr/bin/docker-compose -f /opt/docker-compose.yml up -d
        ExecStop=/usr/bin/docker-compose -f /opt/docker-compose.yml down

        [Install]
        WantedBy=multi-user.target

    # Docker Compose updater (pull and restart daily)
    - name: docker-compose-updater.service
      contents: |
        [Unit]
        Description=Update Docker Compose Stack
        After=docker.service
        Requires=docker.service

        [Service]
        Type=oneshot
        WorkingDirectory=/opt
        ExecStart=/usr/bin/docker-compose -f /opt/docker-compose.yml pull
        ExecStart=/usr/bin/docker-compose -f /opt/docker-compose.yml up -d

    - name: docker-compose-updater.timer
      enabled: true
      contents: |
        [Unit]
        Description=Update Docker Compose Stack daily

        [Timer]
        OnCalendar=daily
        Persistent=true

        [Install]
        WantedBy=timers.target