{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://fleet.forgesdlc.com/schemas/build-cache.schema.json",
  "title": "Forge Fleet requirement template build cache",
  "description": "Persisted at etc/containers/build_cache.json",
  "type": "object",
  "additionalProperties": false,
  "required": ["version", "entries"],
  "properties": {
    "version": { "type": "integer", "minimum": 1 },
    "entries": {
      "type": "object",
      "additionalProperties": { "$ref": "#/$defs/entry" }
    }
  },
  "$defs": {
    "entry": {
      "type": "object",
      "additionalProperties": true,
      "properties": {
        "image": { "type": "string" },
        "fingerprint": { "type": "string" },
        "built_at": { "type": "number" },
        "dockerfile_sha256": { "type": "string" },
        "last_error": { "type": ["string", "null"] },
        "failed_at": { "type": "number" }
      }
    }
  }
}