{
  "nodes": [
    {
      "id": "6b1865a7-f150-4d2b-b1f7-37c68b2173d6",
      "name": "Fetch Manifest Digest",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        920,
        -300
      ],
      "parameters": {
        "url": "={{\"https://<<your-registry-url>>/v2/\" + $json.name + \"/manifests/\" + $json.tag}}",
        "options": {
          "fullResponse": true
        },
        "authentication": "genericCredentialType",
        "genericAuthType": "httpBasicAuth",
        "headerParametersUi": {
          "parameter": [
            {
              "name": "Accept",
              "value": "application/vnd.docker.distribution.manifest.v2+json, application/vnd.oci.image.manifest.v1+json, application/vnd.oci.image.index.v1+json, application/vnd.docker.distribution.manifest.list.v2+json"
            }
          ]
        }
      },
      "typeVersion": 2
    },
    {
      "id": "3c1daca9-3897-4596-b62d-db561f8cb047",
      "name": "Remove Old Tags",
      "type": "n8n-nodes-base.httpRequest",
      "onError": "continueErrorOutput",
      "position": [
        840,
        -40
      ],
      "parameters": {
        "url": "={{\"https://<<your-registry-url>>/v2/\" + $json.image + \"/manifests/\" + $json.tag.digest}}",
        "options": {},
        "requestMethod": "DELETE",
        "authentication": "genericCredentialType",
        "genericAuthType": "httpBasicAuth",
        "headerParametersUi": {
          "parameter": [
            {
              "name": "Accept",
              "value": "application/vnd.docker.distribution.manifest.v2+json"
            }
          ]
        }
      },
      "typeVersion": 2
    },
    {
      "id": "6974749e-8c85-4334-a7e7-e964f057ed6f",
      "name": "Retrieve Image Tags",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        400,
        -300
      ],
      "parameters": {
        "url": "={{\"https://<<your-registry-url>>/v2/\" + $json[\"image\"] + \"/tags/list\"}}",
        "options": {},
        "authentication": "genericCredentialType",
        "genericAuthType": "httpBasicAuth",
        "headerParametersUi": {
          "parameter": [
            {
              "name": "Accept",
              "value": "application/vnd.docker.distribution.manifest.v2+json, application/vnd.oci.image.manifest.v1+json, application/vnd.oci.image.index.v1+json, application/vnd.docker.distribution.manifest.list.v2+json"
            }
          ]
        }
      },
      "typeVersion": 2
    },
    {
      "id": "30857c32-508e-4f95-8e26-c9f2fc84e074",
      "name": "List Images",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        40,
        -300
      ],
      "parameters": {
        "url": "https://<<your-registry-url>>/v2/_catalog",
        "options": {},
        "authentication": "genericCredentialType",
        "genericAuthType": "httpBasicAuth"
      },
      "typeVersion": 2
    },
    {
      "id": "c5965a6a-28e6-4217-a846-a849de153430",
      "name": "Extract Image Names",
      "type": "n8n-nodes-base.code",
      "position": [
        220,
        -300
      ],
      "parameters": {
        "jsCode": "const images = items[0].json.repositories;\nreturn images.map(image => ({ json: { image } }));"
      },
      "typeVersion": 2
    },
    {
      "id": "b13eb6e5-1a16-4992-b0bd-9b228559fecf",
      "name": "Identify Tags to Remove",
      "type": "n8n-nodes-base.code",
      "position": [
        600,
        -40
      ],
      "parameters": {
        "jsCode": "const result = [];\n\nfor (const item of items) {\n  const tags = item.json.tags;\n  if (tags) {\n    const latestTag = tags.includes('latest') ? 'latest' : null;\n    const sortedTags = tags.filter(tag => tag !== 'latest')\n                            .sort((a, b) => new Date(b.created) - new Date(a.created));\n    const keepTags = sortedTags.slice(0, 10);\n    if (latestTag) keepTags.push('latest');\n    const deleteTags = sortedTags.slice(10);\n    result.push(...deleteTags.map(tag => ({ json: { image: item.json.name, tag } })));\n  }\n}\n\nreturn result;\n"
      },
      "typeVersion": 2
    },
    {
      "id": "da15ae49-09ee-4658-86a5-9b0a2180c637",
      "name": "Scheduled Trigger",
      "type": "n8n-nodes-base.scheduleTrigger",
      "position": [
        -140,
        -300
      ],
      "parameters": {
        "rule": {
          "interval": [
            {
              "triggerAtHour": 1
            }
          ]
        }
      },
      "typeVersion": 1.2
    },
    {
      "id": "bcc347be-5520-46c0-aac9-0b14ddd8b184",
      "name": "Send Notification Email",
      "type": "n8n-nodes-base.emailSend",
      "position": [
        840,
        180
      ],
      "webhookId": "47f852c3-7136-4e6d-92f6-47322dbba5da",
      "parameters": {
        "text": "=Image : {{ $json.image }}\nTag : {{ $json.tag.tag }}\n\nRemoved",
        "options": {},
        "subject": "Docker Registry Cleaner Notification",
        "toEmail": "to@example.com",
        "fromEmail": "from@example.com",
        "emailFormat": "text"
      },
      "typeVersion": 2.1
    },
    {
      "id": "2c3770ef-cb4c-4007-8897-f4eb7ad3b7cf",
      "name": "Split Tags",
      "type": "n8n-nodes-base.splitOut",
      "position": [
        580,
        -300
      ],
      "parameters": {
        "include": "selectedOtherFields",
        "options": {
          "destinationFieldName": "tag"
        },
        "fieldToSplitOut": "tags",
        "fieldsToInclude": "name"
      },
      "typeVersion": 1
    },
    {
      "id": "4fffa947-02cf-4608-acab-8284250cf622",
      "name": "Filter Valid Tags",
      "type": "n8n-nodes-base.filter",
      "position": [
        740,
        -300
      ],
      "parameters": {
        "options": {},
        "conditions": {
          "options": {
            "version": 2,
            "leftValue": "",
            "caseSensitive": true,
            "typeValidation": "strict"
          },
          "combinator": "and",
          "conditions": [
            {
              "id": "bb56b84e-e7cb-4867-93f8-ac40c71bde4f",
              "operator": {
                "type": "string",
                "operation": "notEmpty",
                "singleValue": true
              },
              "leftValue": "={{ $json.tag }}",
              "rightValue": ""
            },
            {
              "id": "acd8e00c-5fa0-4c62-ba96-9e6f456f7703",
              "operator": {
                "type": "string",
                "operation": "notEmpty",
                "singleValue": true
              },
              "leftValue": "={{ $json.name }}",
              "rightValue": ""
            }
          ]
        }
      },
      "typeVersion": 2.2
    },
    {
      "id": "c023ba14-d12d-497c-9b30-97db04a34c1b",
      "name": "Fetch Manifest Digest for Blob",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        -120,
        -40
      ],
      "parameters": {
        "url": "={{\"https://<<your-registry-url>>/v2/\" + $('Filter Valid Tags').item.json.name + \"/blobs/\" + $json.body.config.digest}}",
        "options": {
          "fullResponse": false
        },
        "authentication": "genericCredentialType",
        "genericAuthType": "httpBasicAuth",
        "headerParametersUi": {
          "parameter": [
            {
              "name": "Accept",
              "value": "application/vnd.docker.distribution.manifest.v2+json"
            }
          ]
        }
      },
      "typeVersion": 2
    },
    {
      "id": "f054b91e-abd4-4854-9bfa-e4a2b70f7e2c",
      "name": "Update Fields",
      "type": "n8n-nodes-base.set",
      "position": [
        60,
        -40
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "c970bdb8-ddbf-486b-a716-c66274a248a7",
              "name": "name",
              "type": "string",
              "value": "={{ $('Filter Valid Tags').item.json.name }}"
            },
            {
              "id": "7ce79761-6557-413c-a9a6-5d1ca564a3df",
              "name": "tag",
              "type": "string",
              "value": "={{ $('Filter Valid Tags').item.json.tag }}"
            },
            {
              "id": "45948a25-d35c-4e3f-9556-3d52a1a89f80",
              "name": "created",
              "type": "string",
              "value": "={{ $json.created }}"
            },
            {
              "id": "c73a14ad-91f6-477f-b4c3-037db319b9ee",
              "name": "digest",
              "type": "string",
              "value": "={{ $('Fetch Manifest Digest').item.json.headers['docker-content-digest'] }}"
            }
          ]
        }
      },
      "typeVersion": 3.4
    },
    {
      "id": "54405505-8445-491a-8f5d-232da8c842d2",
      "name": "Group Tags by Image",
      "type": "n8n-nodes-base.code",
      "position": [
        420,
        -40
      ],
      "parameters": {
        "jsCode": "const groupedData = items.reduce((acc, item) => {\n  const name = item.json.name;\n  if (!acc[name]) {\n    acc[name] = [];\n  }\n  acc[name].push({\n    tag: item.json.tag,\n    created: item.json.created,\n    digest: item.json.digest\n  });\n  return acc;\n}, {});\n\nreturn Object.keys(groupedData).map(name => ({\n  json: { name, tags: groupedData[name] }\n}));\n"
      },
      "typeVersion": 2
    },
    {
      "id": "980aab86-44cd-47d5-b3b7-42cbae26eb09",
      "name": "Sort by Creation Date",
      "type": "n8n-nodes-base.sort",
      "position": [
        240,
        -40
      ],
      "parameters": {
        "options": {},
        "sortFieldsUi": {
          "sortField": [
            {
              "order": "descending",
              "fieldName": "created"
            }
          ]
        }
      },
      "typeVersion": 1
    },
    {
      "id": "0561efb9-4903-4bec-bc1a-8131e5f5de67",
      "name": "Send Failure Notification Email",
      "type": "n8n-nodes-base.emailSend",
      "position": [
        1120,
        80
      ],
      "webhookId": "47f852c3-7136-4e6d-92f6-47322dbba5da",
      "parameters": {
        "text": "=Image : {{ $json.image }}\nTag : {{ $json.tag.tag }}\n\nFailed",
        "options": {},
        "subject": "[FAIL] Docker Registry Cleaner Notification",
        "toEmail": "to@example.com",
        "fromEmail": "from@example.com",
        "emailFormat": "text"
      },
      "typeVersion": 2.1
    },
    {
      "id": "eaa28914-351c-4934-ba1c-0d39faf67ef3",
      "name": "Execute Garbage Collection",
      "type": "n8n-nodes-base.ssh",
      "position": [
        1120,
        -100
      ],
      "parameters": {
        "cwd": "/opt/services/",
        "command": "docker compose exec -it -u root registry bin/registry garbage-collect --delete-untagged /etc/docker/registry/config.yml",
        "authentication": "privateKey"
      },
      "typeVersion": 1
    }
  ],
  "pinData": {},
  "connections": {
    "Split Tags": {
      "main": [
        [
          {
            "node": "Filter Valid Tags",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "List Images": {
      "main": [
        [
          {
            "node": "Extract Image Names",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Update Fields": {
      "main": [
        [
          {
            "node": "Sort by Creation Date",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Remove Old Tags": {
      "main": [
        [
          {
            "node": "Execute Garbage Collection",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "Send Failure Notification Email",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Filter Valid Tags": {
      "main": [
        [
          {
            "node": "Fetch Manifest Digest",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Scheduled Trigger": {
      "main": [
        [
          {
            "node": "List Images",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Extract Image Names": {
      "main": [
        [
          {
            "node": "Retrieve Image Tags",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Group Tags by Image": {
      "main": [
        [
          {
            "node": "Identify Tags to Remove",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Retrieve Image Tags": {
      "main": [
        [
          {
            "node": "Split Tags",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Fetch Manifest Digest": {
      "main": [
        [
          {
            "node": "Fetch Manifest Digest for Blob",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Sort by Creation Date": {
      "main": [
        [
          {
            "node": "Group Tags by Image",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Identify Tags to Remove": {
      "main": [
        [
          {
            "node": "Remove Old Tags",
            "type": "main",
            "index": 0
          },
          {
            "node": "Send Notification Email",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Fetch Manifest Digest for Blob": {
      "main": [
        [
          {
            "node": "Update Fields",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  }
}