[CORL-663] v4 release fixes (#2613)

* fix: removed latest pushing from docker deploy script

* fix: addressed circleci bug

scripts/docker.sh

@@ -30,7 +30,7 @@ deploy_tag() {
   done
 
   # Push each of the tags to dockerhub, including latest
-  for version in $tag_list latest
+  for version in $tag_list
   do
       echo "==> pushing $version"
       docker push coralproject/talk:$version
@@ -38,12 +38,6 @@ deploy_tag() {
   done
 }
 
-deploy_latest() {
-  echo "==> pushing latest"
-  docker push coralproject/talk:latest
-  docker push coralproject/talk:latest-onbuild
-}
-
 deploy_branch() {
   echo "==> tagging branch $CIRCLE_BRANCH"
   docker tag coralproject/talk:latest coralproject/talk:$CIRCLE_BRANCH
@@ -80,10 +74,7 @@ then
   then
     deploy_tag
   else
-    if [ "$CIRCLE_BRANCH" = "master" ]
-    then
-      deploy_latest
-    else
+    if [ "$CIRCLE_BRANCH" != "master" ]
       deploy_branch
     fi
   fi