render.yaml

# Render blueprint. Import it from the dashboard, or use it as a checklist for
# a service you have already created by hand.
services:
  - type: web
    name: useful-tools
    # Docker rather than the native Node runtime, because the PDF exporter
    # needs a Chromium on the image and the Node runtime has none.
    runtime: docker
    dockerfilePath: ./Dockerfile
    plan: starter # a disk cannot be attached to the free plan
    healthCheckPath: /

    # Shared files, and the files people send to a request link, live on this
    # disk. Without it Render gives the service a fresh filesystem on every
    # deploy and restart, so every link handed out would break.
    disk:
      name: data
      mountPath: /var/data
      sizeGB: 10

    envVars:
      - key: DATA_DIR
        value: /var/data
      # Signs the cookies issued when someone unlocks a password-protected
      # file or request link. Generated on first use if unset, but then a
      # restart invalidates every cookie already issued.
      - key: SHARE_SECRET
        generateValue: true
      # Baked into canonical and Open Graph tags at build time, so it has to
      # be the public URL rather than the internal one.
      - key: NEXT_PUBLIC_SITE_URL
        sync: false