add git tags to our registry images, when they exist

.gitlab-ci.yml

@@ -45,6 +45,26 @@ create the Gridded GLM package:
 #    # upload the package to /apollo/ via a limited-use key on espresso
 #    - rsync -auv -e "ssh -T -o StrictHostKeyChecking=no -o IdentitiesOnly=yes -o ForwardAgent=no -i $NICKB_UPLOAD_KEY" cspp-geo-gridded-glm-$CI_COMMIT_SHORT_SHA.tar.xz nickb@espresso:/apollo/csppgeo/packages/gridded-glm/ci/cspp-geo-gridded-glm-$CI_COMMIT_SHORT_SHA.tar.xz
 
+push our images with version tags:
+  stage: release
+  image: docker:19.03.1
+  tags:
+    - docker
+  services:
+    - docker:19.03.1-dind
+  rules:
+    - if: '$CI_COMMIT_TAG'
+  script:
+    - docker login --username $CI_REGISTRY_USER --password $CI_REGISTRY_PASSWORD $CI_REGISTRY
+# buildbucket
+    - docker pull $BUILDBUCKET_IMAGE:$CI_COMMIT_SHORT_SHA
+    - if [ $CI_COMMIT_TAG != '' ]; then docker tag $BUILDBUCKET_IMAGE:$CI_COMMIT_SHORT_SHA $BUILDBUCKET_IMAGE:$CI_COMMIT_TAG; fi
+    - if [ $CI_COMMIT_TAG != '' ]; then docker push $BUILDBUCKET_IMAGE:$CI_COMMIT_TAG; fi
+# gridded_glm
+    - docker pull $GRIDDED_GLM_IMAGE:$CI_COMMIT_SHORT_SHA
+    - if [ $CI_COMMIT_TAG != '' ]; then docker tag $GRIDDED_GLM_IMAGE:$CI_COMMIT_SHORT_SHA $GRIDDED_GLM_IMAGE:$CI_COMMIT_TAG; fi
+    - if [ $CI_COMMIT_TAG != '' ]; then docker push $GRIDDED_GLM_IMAGE:$CI_COMMIT_TAG; fi
+
 push our images as latest tags:
   stage: release
   image: docker:19.03.1