{
"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": 1.1999999999999999555910790149937383830547332763671875
},
{
"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": 2.100000000000000088817841970012523233890533447265625
},
{
"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": 2.20000000000000017763568394002504646778106689453125
},
{
"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": 3.399999999999999911182158029987476766109466552734375
},
{
"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": 2.100000000000000088817841970012523233890533447265625
},
{
"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
}
]
]
}
}
}
