Builder to bash to manage TAG env properly

Author: psyduck787

builder

@@ -1,4 +1,5 @@
-#!/bin/sh
+#!/bin/bash
+
 # Build wheels for all projects
 export TAG=`if [ "$TRAVIS_BRANCH" == "master" ]; then echo "latest"; else echo $THUMBOR_VERSION; fi`
 echo "TAG: $TAG"
@@ -28,4 +29,4 @@ echo "--> BUILDING apsl/remotecv"
 docker build -f remotecv/Dockerfile -t apsl/remotecv remotecv/
 echo "--> TAGGING apsl/remotecv:$TAG"
 docker tag apsl/remotecv apsl/remotecv:$TAG
-mv remotecv/wheelhouse wheelhouse
+mv remotecv/wheelhouse wheelhouse