fix: capture exit code instead of std-out

ref #13

roles/lego/files/lego_run.sh

@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-set -euo pipefail
+set -xeuo pipefail
 
 LEGO_BINARY=$(/usr/bin/env which lego)
 
@@ -8,14 +8,17 @@ if [[ -n "${LEGO_HTTP_FALLBACK_PORT:-}" ]]; then
     echo "nc not found (in PATH), exiting"
     exit 1
   fi
+  set +e
   nc -z 127.0.0.1 $LEGO_HTTP_PORT;
-  if [[ $? -eq 0 ]]; then
+  nc_exit_code=$?;
+  set -e
+  if [[ $nc_exit_code -eq 0 ]]; then
       LEGO_HTTP_PORT=$LEGO_HTTP_FALLBACK_PORT
   fi
 fi
 
 if [[ -n "${LEGO_PRE_RENEWAL_HOOK:-}" ]]; then
-  $LEGO_PRE_RENEWAL_HOOK
+  /usr/bin/env bash -c "$LEGO_PRE_RENEWAL_HOOK"
 fi
 
 LEGO_COMMAND_ARGS_EXPANDED=$(bash -c "echo $LEGO_COMMAND_ARGS") # This is a bit icky
@@ -31,5 +34,5 @@ find "$LEGO_CERT_STORE_PATH/certificates" -type f | xargs -I{} -n 1 chmod "$LEGO
 find "$LEGO_CERT_STORE_PATH/certificates" -type f | xargs -I{} -n 1 chown "${LEGO_CERT_USER}:${LEGO_CERT_GROUP}" "{}"
 
 if [[ -n "${LEGO_POST_RENEWAL_HOOK:-}" ]]; then
-  $LEGO_POST_RENEWAL_HOOK
+  /usr/bin/env bash -c "$LEGO_POST_RENEWAL_HOOK"
 fi