fix https://github.com/acmesh-official/acme.sh/issues/4612#issuecomment-1518929996

deploy/docker.sh

@@ -273,16 +273,27 @@ _check_curl_version() {
   _minor="$(_getfield "$_cversion" 2 '.')"
   _debug2 "_minor" "$_minor"
 
-  if [ "$_major$_minor" -lt "740" ]; then
+  if [ "$_major" -ge "8" ]; then
+    #ok
+    return 0;
+  fi
+  if [ "$_major" = "7" ]; then
+    if [ "$_minor" -lt "40" ]; then
       _err "curl v$_cversion doesn't support unit socket"
       _err "Please upgrade to curl 7.40 or later."
       return 1
     fi
-  if [ "$_major$_minor" -lt "750" ]; then
+    if [ "$_minor" -lt "50" ]; then
       _debug "Use short host name"
       export _CURL_NO_HOST=1
     else
       export _CURL_NO_HOST=
     fi
     return 0
+  else
+    _err "curl v$_cversion doesn't support unit socket"
+    _err "Please upgrade to curl 7.40 or later."
+    return 1
+  fi
+
 }