Use new master / rc release release strategy

bin/alias

@@ -0,0 +1,12 @@
+#!/bin/bash
+
+set -eo pipefail
+
+[ ! -z $DOCKERHUB_REPO ] && [ $# -eq 2 ]
+
+VERSION="$1"
+ALIAS="$2"
+
+docker login -e $DOCKER_EMAIL -u $DOCKER_USER -p $DOCKER_PASS
+docker tag $DOCKERHUB_REPO:$VERSION $DOCKERHUB_REPO:$ALIAS
+docker push $DOCKERHUB_REPO:$ALIAS

circle.yml

@@ -18,16 +18,22 @@ test:
   override:
     - pytest --junitxml=$CIRCLE_TEST_REPORTS/junit.xml tests/
 deployment:
-  latest:
+  master:
     branch: master
     owner: mozilla
     commands:
-      - ./bin/deploy "latest"
-  hub_releases:
+      - ./bin/deploy "master"
+  release:
+    branch: release
+    owner: mozilla
+    commands:
+      - ./bin/deploy "rc"
+  milestone:
     tag: /^m[0-9]+(\.[0-9]+)?$/
     owner: mozilla
     commands:
       - ./bin/deploy "$CIRCLE_TAG"
+      - ./bin/alias "$CIRCLE_TAG" "latest"
 general:
   branches:
     ignore: