feat: pin versions in documentation and examples

- Replace :latest with pinned versions in README.md, QUICKSTART.md, and docker-compose files
- Add renovate custom manager for markdown files to auto-update pinned versions
- Remove Docker Compose custom managers (handled automatically by Renovate)
- Ensure users get stable, tested versions instead of potentially unstable :latest

Author: d0ugal

QUICKSTART.md

@@ -6,7 +6,7 @@ Get ghcr-exporter running in minutes!
 
 ### 1. Pull the image
 ```bash
-docker pull ghcr.io/d0ugal/ghcr-exporter:latest
+docker pull ghcr.io/d0ugal/ghcr-exporter:v2.0.7
 ```
 
 ### 2. Create a configuration file
@@ -24,7 +24,7 @@ docker run -d \
   --name ghcr-exporter \
   -p 8080:8080 \
   -v $(pwd)/config.yaml:/app/config.yaml:ro \
-  ghcr.io/d0ugal/ghcr-exporter:latest
+  ghcr.io/d0ugal/ghcr-exporter:v2.0.7
 ```
 
 ### 4. Verify it's working
@@ -60,7 +60,7 @@ make build
 version: '3.8'
 services:
   ghcr-exporter:
-    image: ghcr.io/d0ugal/ghcr-exporter:latest
+    image: ghcr.io/d0ugal/ghcr-exporter:v2.0.7
     ports:
       - "8080:8080"
     volumes:

README.md

@@ -2,7 +2,7 @@
 
 A Prometheus exporter for GitHub Container Registry (GHCR) metrics.
 
-**Image**: `ghcr.io/d0ugal/ghcr-exporter:latest`
+**Image**: `ghcr.io/d0ugal/ghcr-exporter:v2.0.7`
 
 ## Metrics
 
@@ -30,7 +30,7 @@ A Prometheus exporter for GitHub Container Registry (GHCR) metrics.
 version: '3.8'
 services:
   ghcr-exporter:
-    image: ghcr.io/d0ugal/ghcr-exporter:latest
+    image: ghcr.io/d0ugal/ghcr-exporter:v2.0.7
     ports:
       - "8080:8080"
     volumes:
@@ -85,7 +85,7 @@ packages:
 version: '3.8'
 services:
   ghcr-exporter:
-    image: ghcr.io/d0ugal/ghcr-exporter:latest
+    image: ghcr.io/d0ugal/ghcr-exporter:v2.0.7
     ports:
       - "8080:8080"
     environment:
@@ -113,7 +113,7 @@ spec:
     spec:
       containers:
       - name: ghcr-exporter
-        image: ghcr.io/d0ugal/ghcr-exporter:latest
+        image: ghcr.io/d0ugal/ghcr-exporter:v2.0.7
         ports:
         - containerPort: 8080
         env:

docker-compose.env.example.yml

@@ -2,7 +2,7 @@ version: '3.8'
 
 services:
   ghcr-exporter:
-    image: ghcr.io/d0ugal/ghcr-exporter:latest
+    image: ghcr.io/d0ugal/ghcr-exporter:v2.0.7
     container_name: ghcr-exporter
     ports:
       - "8080:8080"
@@ -34,7 +34,7 @@ services:
 # Example with minimal configuration:
 # services:
 #   ghcr-exporter:
-#     image: ghcr.io/d0ugal/ghcr-exporter:latest
+#     image: ghcr.io/d0ugal/ghcr-exporter:v2.0.7
 #     container_name: ghcr-exporter
 #     ports:
 #       - "8080:8080"

docker-compose.example.yml

@@ -2,7 +2,7 @@ version: '3.8'
 
 services:
   ghcr-exporter:
-    image: ghcr.io/d0ugal/ghcr-exporter:latest
+    image: ghcr.io/d0ugal/ghcr-exporter:v2.0.7
     container_name: ghcr-exporter
     ports:
       - "8080:8080"
@@ -17,45 +17,4 @@ services:
         limits:
           memory: 256M
         reservations:
-          memory: 128M
-
-# Example with Prometheus and Grafana:
-
-# services:
-#   ghcr-exporter:
-#     image: ghcr.io/d0ugal/ghcr-exporter:latest
-#     container_name: ghcr-exporter
-#     ports:
-#       - "8080:8080"
-#     volumes:
-#       - ./config.yaml:/app/config.yaml:ro
-#     environment:
-#       - TZ=UTC
-#     restart: unless-stopped
-#     networks:
-#       - monitoring
-#
-#   prometheus:
-#     image: prom/prometheus:latest
-#     container_name: prometheus
-#     ports:
-#       - "9090:9090"
-#     volumes:
-#       - ./prometheus.yml:/etc/prometheus/prometheus.yml:ro
-#     restart: unless-stopped
-#     networks:
-#       - monitoring
-#
-#   grafana:
-#     image: grafana/grafana:latest
-#     container_name: grafana
-#     ports:
-#       - "3000:3000"
-#     environment:
-#       - GF_SECURITY_ADMIN_PASSWORD=admin
-#     restart: unless-stopped
-#     networks:
-#       - monitoring
-#
-# networks:
-#   monitoring:
+          memory: 128M

renovate.json5

@@ -54,5 +54,17 @@
       datasourceTemplate: 'docker',
       versioningTemplate: 'semver',
     },
+    {
+      customType: 'regex',
+      managerFilePatterns: [
+        '**/*.md',
+      ],
+      matchStrings: [
+        'ghcr\\.io/d0ugal/ghcr-exporter:(?<currentValue>v[\\d\\.]+)',
+      ],
+      depNameTemplate: 'ghcr.io/d0ugal/ghcr-exporter',
+      datasourceTemplate: 'docker',
+      versioningTemplate: 'semver',
+    },
   ],
 }