use full image source and set version for all Chaosknoten compose images

Use a full image source and set and explicit version for all images in
Chaosknoten (docker-)compose files.
With Renovate now set up, it is feasible to explicitly set versions.

resources/chaosknoten/grafana/docker_compose/compose.yaml.j2

@@ -2,7 +2,7 @@
 services:
 
   prometheus:
-    image: prom/prometheus
+    image: docker.io/prom/prometheus:v3.7.1
     container_name: prometheus
     command:
       - '--config.file=/etc/prometheus/prometheus.yml'
@@ -18,7 +18,7 @@ services:
       - prom_data:/prometheus
 
   alertmanager:
-    image: prom/alertmanager
+    image: docker.io/prom/alertmanager:v0.28.1
     container_name: alertmanager
     command:
       - '--config.file=/etc/alertmanager/alertmanager.yaml'
@@ -31,7 +31,7 @@ services:
       - alertmanager_data:/alertmanager
 
   grafana:
-    image: grafana/grafana
+    image: docker.io/grafana/grafana:12.2.1
     container_name: grafana
     ports:
       - 3000:3000
@@ -45,7 +45,7 @@ services:
       - graf_data:/var/lib/grafana
 
   pve-exporter:
-    image: prompve/prometheus-pve-exporter
+    image: docker.io/prompve/prometheus-pve-exporter:3.5.5
     container_name: pve-exporter
     ports:
       - 9221:9221
@@ -58,7 +58,7 @@ services:
       - /dev/null:/etc/prometheus/pve.yml
 
   loki:
-    image: grafana/loki:3
+    image: docker.io/grafana/loki:3.5.7
     container_name: loki
     ports:
       - 13100:3100
@@ -69,7 +69,7 @@ services:
       - loki_data:/var/loki
 
   ntfy-alertmanager-ccchh-critical:
-    image: xenrox/ntfy-alertmanager:latest
+    image: docker.io/xenrox/ntfy-alertmanager:0.5.0
     container_name: ntfy-alertmanager-ccchh-critical
     volumes:
       - ./configs/ntfy-alertmanager-ccchh-critical:/etc/ntfy-alertmanager/config
@@ -78,7 +78,7 @@ services:
     restart: unless-stopped
 
   ntfy-alertmanager-fux-critical:
-    image: xenrox/ntfy-alertmanager:latest
+    image: docker.io/xenrox/ntfy-alertmanager:0.5.0
     container_name: ntfy-alertmanager-fux-critical
     volumes:
       - ./configs/ntfy-alertmanager-fux-critical:/etc/ntfy-alertmanager/config
@@ -87,7 +87,7 @@ services:
     restart: unless-stopped
 
   ntfy-alertmanager-ccchh:
-    image: xenrox/ntfy-alertmanager:latest
+    image: docker.io/xenrox/ntfy-alertmanager:0.5.0
     container_name: ntfy-alertmanager-ccchh
     volumes:
       - ./configs/ntfy-alertmanager-ccchh:/etc/ntfy-alertmanager/config
@@ -96,7 +96,7 @@ services:
     restart: unless-stopped
 
   ntfy-alertmanager-fux:
-    image: xenrox/ntfy-alertmanager:latest
+    image: docker.io/xenrox/ntfy-alertmanager:0.5.0
     container_name: ntfy-alertmanager-fux
     volumes:
       - ./configs/ntfy-alertmanager-fux:/etc/ntfy-alertmanager/config