Convert Docker registry cleanup job to manual mode

We no longer want to build periodically CCP Docker images with BUILD_NUMBER
as tag so we don't need automatic purge of old tags.
But sometimes it's useful to manually remove some unwanted tags.
This job is now meant to be run manually and accepts a parameter from
Jenkins web-ui which allows for selecting which tags should be deleted
(by regular expression).

Change-Id: I43b35e8cc8ba17fe22ba8014065938d32286c600

jenkins-tp/jobs/builders/mcp-clean-docker-registry.sh

@@ -7,13 +7,14 @@
 
 # CONFIGURATION:
 ######################################################
-: ${LEAVE_LAST_RECENT_TAGS:="6"}
 : ${DOCKER_NAMESPACE:="mcp"}
 : ${DOCKER_REGISTRY:="registry.mcp.fuel-infra.org"}
 REGISTRY_MANAGER="registry-manage --host ${DOCKER_REGISTRY}"
+TAG_REGEXP=${PARAM_TAG_REGEXP}
 
-[[ ! ${LEAVE_LAST_RECENT_TAGS} =~ ^[0-9]+$ ]] && exit 1
 
+# List all tags for all images, select and delete tags matching TAG_REGEXP:
+# 
 # Sample output from registry-manage tool:
 # "list" subcommand:
 # mcp/base
@@ -29,7 +30,8 @@ REGISTRY_MANAGER="registry-manage --host ${DOCKER_REGISTRY}"
 # new
 for image in `${REGISTRY_MANAGER} list | grep "^${DOCKER_NAMESPACE}/"`; do
     ${REGISTRY_MANAGER} list-tags ${image} | \
-    grep "^[0-9]\+$" | sort -rn | tail -n +`expr ${LEAVE_LAST_RECENT_TAGS} + 1` | \
-    awk -v REGISTRY_MANAGER="${REGISTRY_MANAGER}" -v image=${image} \
-        '$1 ~ /^[0-9]+$/ {exit system(REGISTRY_MANAGER" delete "image":"$1);}'
+    grep "${TAG_REGEXP}"  | \
+    awk -v REGISTRY_MANAGER="${REGISTRY_MANAGER}" -v image="${image}" \
+        -v TAG_REGEXP="${TAG_REGEXP}" \
+        '$1 ~ TAG_REGEXP {exit system(REGISTRY_MANAGER" delete "image":"$1);}'
 done

jenkins-tp/jobs/mcp-build-images.yaml

@@ -46,12 +46,15 @@
 - job-template:
     name: mcp-clean-docker-registry
     description: |
-      Remove old tags from MCP Docker registry.
+      Manual job for removing selected tags from MCP Docker registry.
     node: standard
+    parameters:
+      - text:
+          name: PARAM_TAG_REGEXP
+          description: "Tag (regexp) to delete for all images in mcp namespace"
     builders:
       - inject:
           properties-content: |
-            LEAVE_LAST_RECENT_TAGS=6
             DOCKER_REGISTRY=registry.mcp.fuel-infra.org
             DOCKER_NAMESPACE=mcp
       - shell:

zuul-tp/layout.yaml

@@ -132,4 +132,3 @@ projects:
       - update-jenkins-jobs
     periodic:
       - 'mcp-build-images-smoke'
-      - 'mcp-clean-docker-registry'