Updates for grafana stack

roles/alloy/templates/docker-compose.yml.j2

@@ -0,0 +1,29 @@
+# Managed by Ansible (roles/alloy). Do not edit by hand.
+services:
+  alloy:
+    image: {{ alloy_image }}
+    container_name: alloy
+    restart: unless-stopped
+    privileged: true
+    pid: host
+    command:
+      - run
+      - /etc/alloy/config.alloy
+      - --storage.path=/var/lib/alloy/data
+      - --server.http.listen-addr=0.0.0.0:12345
+    volumes:
+      - ./config.alloy:/etc/alloy/config.alloy:ro
+      - alloy-data:/var/lib/alloy/data
+      - /var/run/docker.sock:/var/run/docker.sock:ro
+      - /var/log/journal:/var/log/journal:ro
+      - /etc/machine-id:/etc/machine-id:ro
+      - /run/systemd/journal:/run/systemd/journal:ro
+      - /proc:/host/proc:ro
+      - /sys:/host/sys:ro
+      - /:/host/root:ro
+      - /var/run:/var/run:ro
+      - /var/lib/docker:/var/lib/docker:ro
+      - /dev/disk:/dev/disk:ro
+
+volumes:
+  alloy-data: