docs(s3): add Supabase Storage backup configuration guide

- add new S3 knowledge base page for Supabase Storage setup and verification
- link Supabase guide in VitePress sidebar and S3 introduction page
- update S3 introduction provider list/description wording
- refresh lockfile dependency versions and add `jean.json` dev runner config

bun.lock

@@ -12,15 +12,15 @@
       },
       "devDependencies": {
         "@iconify/vue": "^5.0.0",
-        "@tailwindcss/vite": "^4.1.0",
+        "@tailwindcss/vite": "^4.2.1",
         "@types/node": "25.0.9",
         "markdown-it-container": "4.0.0",
-        "tailwindcss": "^4.1.0",
+        "tailwindcss": "^4.2.1",
         "vitepress": "1.6.4",
-        "vitepress-plugin-group-icons": "^1.6.9",
-        "vitepress-plugin-llms": "^1.10.0",
+        "vitepress-plugin-group-icons": "^1.7.1",
+        "vitepress-plugin-llms": "^1.11.0",
         "vitepress-plugin-tabs": "^0.7.3",
-        "vue": "^3.5.26",
+        "vue": "^3.5.29",
       },
     },
   },

docs/.vitepress/config.mts

@@ -408,6 +408,7 @@ export default defineConfig({
                   { text: 'Introduction', link: '/knowledge-base/s3/introduction' },
                   { text: 'AWS', link: '/knowledge-base/s3/aws' },
                   { text: 'R2', link: '/knowledge-base/s3/r2' },
+                  { text: 'Supabase', link: '/knowledge-base/s3/supabase' },
                 ]
               },
               {

docs/knowledge-base/s3/introduction.md

@@ -1,18 +1,19 @@
 ---
 title: "Introduction"
-description: "Configure S3-compatible storage for Coolify backups including AWS, DigitalOcean Spaces, MinIO, Cloudflare R2, Backblaze B2, and Scaleway Object Storage."
+description: "Configure S3-compatible storage for Coolify backups including AWS, DigitalOcean Spaces, MinIO, Cloudflare R2, Supabase Storage, Backblaze B2, and Scaleway Object Storage."
 ---
 
 # S3 Introduction
 Currently supported S3 compatible storages are:
 
-- AWS (see [the AWS guide](/knowledge-base/s3/aws) for a detailed walkthrough)
+- AWS (see [the AWS guide](/knowledge-base/s3/aws))
 - DigitalOcean Spaces
 - MinIO
-- Cloudflare's R2
+- Cloudflare's R2 (see the [R2 guide](/knowledge-base/s3/r2))
+- Supabase Storage (see the [Supabase guide](/knowledge-base/s3/supabase))
 - Backblaze B2
 - Scaleway Object Storage
-- Hetzner S3 Storage (beta)
+- Hetzner S3 Storage
 - Wasabi hot cloud storage
 - Vultr
 - CloudPe Object Storage

docs/knowledge-base/s3/supabase.md

@@ -0,0 +1,43 @@
+---
+title: "Supabase Storage"
+description: "Configure Supabase Storage as an S3-compatible backup destination for Coolify using your project endpoint, bucket, region, and access keys."
+---
+
+# Supabase Storage
+
+Supabase Storage exposes an S3-compatible endpoint that you can use with Coolify backups.
+
+::: info Note
+This guide is for using a Supabase project as a remote S3 storage endpoint for Coolify backups. It is different from self-hosting the [Supabase service](/services/supabase) on Coolify.
+:::
+
+## Configuration
+
+1. In Supabase, create the bucket you want to use for backups.
+2. Open your project and go to **Storage** -> **S3 Configuration**.
+3. Create a new access key pair.
+   ::: success Tip
+   Save the `Access Key ID` and `Secret Access Key` somewhere safe.
+   :::
+4. Copy your S3 endpoint.
+   - Preferred: `https://<project-ref>.storage.supabase.co/storage/v1/s3`
+   - Fallback: `https://<project-ref>.supabase.co/storage/v1/s3`
+5. Note your project region from the Supabase dashboard.
+6. In Coolify, go to **Storage** and click **Add**.
+7. Fill in the fields with the values from Supabase:
+   - **Endpoint**: your Supabase S3 endpoint
+   - **Bucket**: the bucket you created in Supabase
+   - **Region**: your Supabase project region
+   - **Access Key**: your `Access Key ID`
+   - **Secret Key**: your `Secret Access Key`
+8. Click **Validate Connection & Continue**.
+
+::: warning Important
+Use the endpoint exactly as provided by Supabase and keep the `/storage/v1/s3` suffix. Do not append the bucket name to the endpoint.
+:::
+
+## Verification
+
+Coolify verifies the connection with a `ListObjectsV2` request, so the bucket must already exist before you validate it.
+
+Supabase Storage is S3-compatible, but it does not support every AWS S3 feature. For Coolify backups, the endpoint, bucket, region, and access keys above are the important values.

jean.json

@@ -0,0 +1,13 @@
+{
+  "scripts": {
+    "setup": "bun i",
+    "teardown": null,
+    "run": "bun run dev"
+  },
+  "ports": [
+    {
+      "port": 3000,
+      "label": "Docs"
+    }
+  ]
+}