tee to GITHUB_OUTPUT (which can fall back to a local temp file) so we get console output even if the script fails

Signed-off-by: Nick Boldt <nboldt@redhat.com>

Author: nickboldt

export-dynamic/export-dynamic.sh

@@ -178,24 +178,23 @@ do
     echo "$image" >> "$PUBLISHED_EXPORTS_OUTPUT"
 done
 
-# shellcheck disable=SC2129 disable=SC2086
-if [[ "$GITHUB_OUTPUT" != "" ]]
-then
-    echo "FAILED_EXPORTS<<EOF" >> $GITHUB_OUTPUT
-    cat $FAILED_EXPORTS_OUTPUT >> $GITHUB_OUTPUT
-    echo "EOF" >> $GITHUB_OUTPUT
+# write to a temp file if the GITHUB_OUTPUT pipe isn't set
+if [[ ! $GITHUB_OUTPUT ]]; then GITHUB_OUTPUT=/tmp/github_output.txt; fi
 
-    echo "PUBLISHED_EXPORTS<<EOF" >> $GITHUB_OUTPUT
-    cat $PUBLISHED_EXPORTS_OUTPUT >> $GITHUB_OUTPUT
-    echo "EOF" >> $GITHUB_OUTPUT
+echo "FAILED_EXPORTS<<EOF" | tee -a "$GITHUB_OUTPUT"
+cat "$FAILED_EXPORTS_OUTPUT" | tee -a "$GITHUB_OUTPUT"
+echo "EOF" | tee -a "$GITHUB_OUTPUT"
 
-    if [[ "${skipWorkspace}" == "true" ]]
-    then
-        echo "WORKSPACE_SKIPPED_UNCHANGED_SINCE=${INPUTS_LAST_PUBLISH_COMMIT}" >> $GITHUB_OUTPUT
-    else
-        echo "WORKSPACE_SKIPPED_UNCHANGED_SINCE=false" >> $GITHUB_OUTPUT
-    fi
+echo "PUBLISHED_EXPORTS<<EOF" | tee -a "$GITHUB_OUTPUT"
+cat "$PUBLISHED_EXPORTS_OUTPUT" | tee -a "$GITHUB_OUTPUT"
+echo "EOF" | tee -a "$GITHUB_OUTPUT"
+
+if [[ "${skipWorkspace}" == "true" ]]
+then
+    echo "WORKSPACE_SKIPPED_UNCHANGED_SINCE=${INPUTS_LAST_PUBLISH_COMMIT}" | tee -a "$GITHUB_OUTPUT"
+else
+    echo "WORKSPACE_SKIPPED_UNCHANGED_SINCE=false" | tee -a "$GITHUB_OUTPUT"
 fi
 
 # exit a return code equivalent to the number of errors
-exit $((${#errors[@]}))
+exit $((${#errors[@]}))