Now we can build a particular tag

lib/build.sh

@@ -10,6 +10,7 @@ SRC_DIR="${BASE_DIR}/src"
 PROJECT_NAME=${1}
 BUILD_BRANCH=${2}
 BUILD_DIR=${3}
+BUILD_TAG=${4}
 
 function build_project()
 {
@@ -19,6 +20,7 @@ function build_project()
   set_opt project_name "${PROJECT_NAME}"
   set_opt build_dir "${BUILD_DIR}"
   set_opt build_branch "${BUILD_BRANCH}"
+  set_opt build_tag "${BUILD_TAG}"
 
   local workspace=$(mktemp -p ${BUILD_DIR} -d)/${PROJECT_NAME}
   info "Build dir is ${workspace}"