Please make these cmssw specific containers available via unpacked

• cmssw/cc7:latest : This contain CMSSW CentOS7 build time environment. Used by CMSSW Release and Integration builds.
• cmssw/slc6:latest : This contain CMSSW SLc6 build time environment. Used by CMSSW Release and Integration builds.
• cmssw/slc7-installer:latest : Same as cmssw/cc7 but contain only the env needed for installing CMSSW SW.
• cmssw/cms:rhel7 : This provides CMSSW runtime EL7 environment for grid jobs
• cmssw/cms:rhel6 : This provides CMSSW runtime EL6 environment for grid jobs

recipe.yaml

@@ -9,3 +9,8 @@ input:
     - 'https://registry.hub.docker.com/library/centos:centos6'
     - 'https://registry.hub.docker.com/library/centos:centos7'
     - 'https://registry.hub.docker.com/atlas/analysisbase:21.2.60'
+    - 'https://registry.hub.docker.com/cmssw/cc7:latest'
+    - 'https://registry.hub.docker.com/cmssw/slc6:latest'
+    - 'https://registry.hub.docker.com/cmssw/slc7-installer:latest'
+    - 'https://registry.hub.docker.com/cmssw/cms:rhel7'
+    - 'https://registry.hub.docker.com/cmssw/cms:rhel6'
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