- refactor: replaced head

src/usr/local/bin/mediaconch_validation_wrapper.sh

@@ -24,4 +24,4 @@ echo "${TOOL_OUTPUT}"
 # exit code
 #   0 -> valid media file
 #   1 -> invalid media file
-echo "${TOOL_OUTPUT}" | grep "Outcome" | head -n1 | grep -v "fail"
\ No newline at end of file
+echo "${TOOL_OUTPUT}" | grep -m 1 "Outcome" | grep -v "fail"