circle: add tag v-prefix

circle.yml

@@ -44,7 +44,7 @@ deployment:
       - docker push $DOCKER_IMAGE_NAME
       - docker push $QUAY_IMAGE_NAME
   hub_tag:
-    tag: /^[0-9]+(\.[0-9]+){2}(-.+|[^-.]*)$/
+    tag: /^v[0-9]+(\.[0-9]+){2}(-.+|[^-.]*)$/
     owner: prometheus
     commands:
       - promu crossbuild tarballs
@@ -53,7 +53,7 @@ deployment:
       - docker login -e $DOCKER_EMAIL -u $DOCKER_LOGIN -p $DOCKER_PASSWORD
       - docker login -e $QUAY_EMAIL -u $QUAY_LOGIN -p $QUAY_PASSWORD quay.io
       - |
-        if [[ "$CIRCLE_TAG" =~ ^[0-9]+(\.[0-9]+){2}$ ]]; then
+        if [[ "$CIRCLE_TAG" =~ ^v[0-9]+(\.[0-9]+){2}$ ]]; then
             docker tag "$DOCKER_IMAGE_NAME:$CIRCLE_TAG" "$DOCKER_IMAGE_NAME:latest"
             docker tag "$QUAY_IMAGE_NAME:$CIRCLE_TAG" "$QUAY_IMAGE_NAME:latest"
         fi