message: check for dockerfile within buildcontext
diff: @@ -57,7 +57,7 @@ do
  fi
  else
  DOCKERFILE=$OVERRIDE_DOCKERFILE
  - if [ ! -f $DOCKERFILE ]; then
  + if [ ! -f $BUILD_CONTEXT/$DOCKERFILE ]; then
  echo "defined Dockerfile $DOCKERFILE for service $SERVICE not found"; exit 1;
  fi
  fi
  