docs: update README - keep worker, use Blocks for flow secrets

Environment variables are now managed directly in Komodo UI

README.md

@@ -1,6 +1,6 @@
 # Prefect Deployment
 
-GitOps deployment for Prefect workflow orchestration with Tailscale HTTPS access.
+GitOps deployment for Prefect workflow orchestration with Tailscale HTTPS access via Komodo.
 
 ## Prerequisites
 
@@ -13,35 +13,59 @@ CREATE DATABASE prefect;
 CREATE USER prefect WITH PASSWORD 'your-secure-password';
 GRANT ALL PRIVILEGES ON DATABASE prefect TO prefect;
 
--- PostgreSQL 15+ requires:
 \c prefect
+CREATE EXTENSION IF NOT EXISTS pg_trgm;
 GRANT ALL ON SCHEMA public TO prefect;
 ```
 
-### Host Configuration
-
-Download configuration files to `/opt/prefect` (first time only):
-
-```bash
-sudo mkdir -p /opt/prefect/tailscale
-sudo curl -o /opt/prefect/tailscale/serve-config.json https://gitea.arnodo.fr/Damien/prefect-deployment/raw/branch/main/serve-config.json
-```
-
 ### Tailscale Auth Key
 
 Generate a reusable auth key from https://login.tailscale.com/admin/settings/keys
 
-## Deployment
+## Deployment with Komodo
 
-1. Create a new stack in Portainer
-2. Select "Repository" and point to this repository
-3. Portainer will load `stack.env` automatically
-4. Override sensitive values (`CHANGE_ME`) in the environment variables section:
-   - `TS_AUTHKEY` - Tailscale auth key (reusable recommended)
-   - `DB_PASSWORD` - PostgreSQL password
-   - `S3_ACCESS_KEY` - Garage S3 access key
-   - `S3_SECRET_KEY` - Garage S3 secret key
-5. Deploy
+### 1. Add Git Provider (if using private repo)
+
+In Komodo UI: Settings → Git Providers → Add your Gitea instance credentials.
+
+### 2. Create Stack
+
+1. Navigate to **Stacks** → **New Stack**
+2. Configure:
+   - **Name**: `prefect`
+   - **Server**: Select your target server
+   - **Source**: Git Repo
+   - **Git Provider**: `gitea.arnodo.fr` (or your provider)
+   - **Repo**: `Damien/prefect-deployment`
+   - **Branch**: `main`
+   - **File Paths**: `docker-compose.yml`
+
+### 3. Configure Environment Variables
+
+In the stack configuration, add the following environment variables:
+
+| Variable | Description | Example |
+|----------|-------------|---------|
+| `TS_AUTHKEY` | Tailscale auth key (reusable) | `tskey-auth-xxx` |
+| `DB_HOST` | PostgreSQL host | `postgresql.taila5ad8.ts.net` |
+| `DB_PORT` | PostgreSQL port | `5432` |
+| `DB_USER` | Database user | `prefect` |
+| `DB_PASSWORD` | Database password | *secret* |
+
+> **Tip**: Use Komodo's secret variables (marked with 🔒) for sensitive values.
+
+### 4. Deploy
+
+Click **Deploy** in Komodo. The stack will clone the repository and start all services.
+
+## GitOps Workflow
+
+### Auto-deploy on Git Push
+
+1. In Komodo, go to your stack settings
+2. Enable **Auto Deploy** on push
+3. Copy the webhook URL
+4. Add it to your Gitea repository: Settings → Webhooks
 
 ## Access
 
@@ -61,14 +85,33 @@ Once deployed: https://prefect.taila5ad8.ts.net
 
 The `prefect-worker-pg-backup` service automatically creates and listens to the `pg-backup-pool` work pool (type: process).
 
-To deploy a flow to this pool:
+## Secrets Management
+
+Flow-specific secrets (S3 credentials, database passwords, API keys, etc.) should be managed via **Prefect Blocks**, not environment variables in the compose file.
+
+### Creating a Block (example with S3/Garage)
+
+```python
+from prefect_aws import AwsCredentials
+
+creds = AwsCredentials(
+    aws_access_key_id="xxx",
+    aws_secret_access_key="xxx",
+    aws_endpoint_url="https://s3.taila5ad8.ts.net"
+)
+creds.save("garage-credentials")
+```
+
+### Using in a flow
 
 ```python
 from prefect import flow
+from prefect_aws import AwsCredentials
 
 @flow
 def my_backup_flow():
-    ...
+    creds = AwsCredentials.load("garage-credentials")
+    # use creds...
 
 my_backup_flow.deploy(
     name="my-backup",
@@ -76,10 +119,11 @@ my_backup_flow.deploy(
 )
 ```
 
-## Directory Structure
+## Repository Structure
 
 ```
-/opt/prefect/
-└── tailscale/
-    └── serve-config.json     # Tailscale HTTPS configuration
+prefect-deployment/
+├── docker-compose.yml     # Stack definition (relative paths)
+├── serve-config.json      # Tailscale HTTPS serve config
+└── README.md
 ```

docker-compose.yml

@@ -10,7 +10,7 @@ services:
       - TS_SERVE_CONFIG=/config/serve-config.json
     volumes:
       - tailscale-state:/var/lib/tailscale
-      - /opt/prefect/tailscale/serve-config.json:/config/serve-config.json:ro
+      - ./serve-config.json:/config/serve-config.json:ro
     cap_add:
       - NET_ADMIN
       - SYS_MODULE
@@ -78,12 +78,7 @@ services:
     depends_on:
       - prefect-server
     environment:
-      # Prefect API connection (via Tailscale)
       - PREFECT_API_URL=http://localhost:4200/api
-      # S3 credentials for Garage
-      - AWS_ACCESS_KEY_ID=${S3_ACCESS_KEY}
-      - AWS_SECRET_ACCESS_KEY=${S3_SECRET_KEY}
-      - AWS_ENDPOINT_URL=${S3_ENDPOINT_URL}
     command: prefect worker start --pool pg-backup-pool --type process
     restart: unless-stopped
 

stack.env

@@ -1,20 +0,0 @@
-# =============================================================================
-# Prefect Stack Environment Variables
-# =============================================================================
-# This file is used by Portainer when deploying from Git repository.
-# Sensitive values (marked CHANGE_ME) must be set in Portainer UI.
-# =============================================================================
-
-# Tailscale
-TS_AUTHKEY=CHANGE_ME
-
-# PostgreSQL (external database)
-DB_HOST=postgresql.taila5ad8.ts.net
-DB_PORT=5432
-DB_USER=prefect
-DB_PASSWORD=CHANGE_ME
-
-# S3 Storage (Garage) - for backup worker
-S3_ACCESS_KEY=CHANGE_ME
-S3_SECRET_KEY=CHANGE_ME
-S3_ENDPOINT_URL=https://s3.taila5ad8.ts.net