[TEST] shell bash

Author: stephanosio

Dockerfile.ci

@@ -36,6 +36,8 @@ ARG FVP_CORSTONE320_VERSION=11.27_25
 ENV FVP_CORSTONE320_VERSION=$FVP_CORSTONE320_VERSION
 ARG WGET_ARGS="-q --show-progress --progress=bar:force:noscroll"
 
+SHELL ["/bin/bash", "-c"]
+
 # Install Kitware ninja
 # NOTE: Pre-built Kitware ninja binaries are only available for x86_64 host.
 RUN <<EOF