diff --git a/build-android-app.sh b/build-android-app.sh
index af8c4aa..e0c488c 100755
--- a/build-android-app.sh
+++ b/build-android-app.sh
@@ -36,7 +36,11 @@ RUN <<EOF
 cat > /bin/makefile-bash-wrapper.sh << 'WRAPPER'
 #!/bin/bash
 printf $'\033[0;32m''#----------------------------------------\n'$'\033[0m' >&2
-bash "$@"
+bash -e "$@" || {
+  EXITCODE=$?
+  printf $'\033[0;31m''ERROR EXITCODE='"$EXITCODE"'\n'$'\033[0m' >&2
+  exit $EXITCODE
+}
 printf '\n\n\n\n' >&2
 WRAPPER
 chmod u+x /bin/makefile-bash-wrapper.sh
@@ -44,6 +48,7 @@ EOF
 DOCKERFILEEOF
 }
 
+printf $'\033[0;33m'"$(date -Iseconds) starting build"'$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$\n'$'\033[0m'
 diff Dockerfile <(DockerfileContent) 2>/dev/null > /dev/null || {
     test -f Dockerfile && {
         read -p 'reset/start Dockerfile[Y/n]' YES