[Dovecot] Give master user a uid and gid, fixes #2093

data/Dockerfiles/dovecot/docker-entrypoint.sh

@@ -116,7 +116,7 @@ RAND_USER=$(cat /dev/urandom | tr -dc 'a-z0-9' | fold -w 16 | head -n 1)
 RAND_PASS=$(cat /dev/urandom | tr -dc 'a-z0-9' | fold -w 24 | head -n 1)
 
 echo ${RAND_USER}@mailcow.local:{SHA1}$(echo -n ${RAND_PASS} | sha1sum | awk '{print $1}') > /usr/local/etc/dovecot/dovecot-master.passwd
-echo ${RAND_USER}@mailcow.local::::::: > /usr/local/etc/dovecot/dovecot-master.userdb
+echo ${RAND_USER}@mailcow.local::5000:5000:::: > /usr/local/etc/dovecot/dovecot-master.userdb
 echo ${RAND_USER}@mailcow.local:${RAND_PASS} > /etc/sogo/sieve.creds
 
 # 401 is user dovecot