diff --git a/Dockerfile b/Dockerfile
index c7443f2..9ce7ba5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -68,11 +68,14 @@ RUN apk --no-cache add \
     lua \
     lua-ldap
 
-RUN addgroup -g 2222 dovecot
-RUN adduser -u 2222 -h /home/dovecot -D -G dovecot dovecot
+RUN addgroup -g 100 dovecot
+RUN adduser -u 90 -h /dev/null -H -s /sbin/nologin -D -G dovecot dovecot
 
-RUN addgroup -g 2222 dovenull
-RUN adduser -u 2222 -h /home/dovenull -D -G dovenull dovenull
+RUN addgroup -g 101 dovenull
+RUN adduser -u 91 -h /dev/null -H -s /sbin/nologin -D -G dovenull dovenull
+
+RUN addgroup -g 2222 access
+RUN addgroup dovecot access
 
 RUN addgroup -g 1111 vmail
 RUN adduser -u 1111 -h /var/lib/vmail -D -G vmail vmail