Add Prometheus and CopyArtifact plugins

Change-Id: Ibedc0435320a021e5d309e31ca49d4b30c36ac7b
diff --git a/Dockerfile b/Dockerfile
index 62c43bb..b3dadfc 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -80,6 +80,7 @@
         build-monitor-plugin \
         build-user-vars-plugin \
         categorized-view \
+        copyartifact \
         description-setter \
         discard-old-build \
         docker-workflow \
@@ -96,6 +97,7 @@
         monitoring \
         permissive-script-security \
         pipeline-utility-steps \
+        prometheus \
         rebuild \
         simple-theme-plugin \
         slack \