diff --git a/acme.sh b/acme.sh
index e5728b3..bc21152 100755
--- a/acme.sh
+++ b/acme.sh
@@ -1820,14 +1820,18 @@ _starttlsserver() {
 _readlink() {
   _rf="$1"
   if ! readlink -f "$_rf" 2>/dev/null; then
-    if _startswith "$_rf" "\./$PROJECT_ENTRY"; then
-      printf -- "%s" "$(pwd)/$PROJECT_ENTRY"
+    if _startswith "$_rf" "/"; then
+      echo "$_rf"
       return 0
     fi
-    readlink "$_rf"
+    echo "$(pwd)/$_rf" | _conapath
   fi
 }
 
+_conapath() {
+  sed "s#/\./#/#g"
+}
+
 __initHome() {
   if [ -z "$_SCRIPT_HOME" ]; then
     if _exists readlink && _exists dirname; then
@@ -4666,7 +4670,7 @@ _process() {
         HTTPS_INSECURE="1"
         ;;
       --ca-bundle)
-        _ca_bundle="$(readlink -f "$2")"
+        _ca_bundle="$(_readlink -f "$2")"
         CA_BUNDLE="$_ca_bundle"
         shift
         ;;