clean-docker: Add clean dangling containers instruction

To stop integration tests running containers.

The added instruction has been executed on the node with success [1]

[1]

root@jenkins-docker02:~# docker ps --format='table {{.ID}}\t{{.Names}}\t{{.Status}}' | grep "swh_test" | grep "hours\|days\|months" | awk '{print $1}' | xargs docker container stop
71cbbbb07415
428c854f9f98
...
6fc557e614d6
1b3ac02777ce
8d80b89e650d

Refs. swh/infra/sysadm-environment#5198 (closed)

site-modules/profile/files/jenkins/clean-docker-images.sh

@@ -34,6 +34,15 @@ prune_docker () {
   docker volume list --filter dangling=true --format json | jq -r 'select(.Labels!="keep=true")|.Name' | xargs -r docker volume rm
 }
 
+stop_dangling_containers () {
+  # To stop integration tests containers from running too long (after they are done)
+  docker ps --all --format='json' \
+      | jq -r 'select(.CreatedAt < "'"$(date -d '3 hours ago' +'%Y-%m-%d %H:%M:%S')"'")|.ID' \
+      | xargs -r docker container stop
+}
+
+stop_dangling_containers
+
 # Prune dangling layers and volumes once
 prune_docker