diff --git a/docker-compose.yml b/docker-compose.yml
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -29,6 +29,14 @@
     environment:
       - DB_HOST=${DB_HOST}
       - DB_ROOT_PASSWORD=Welcome2KolabSystems
+      - DB_HKCCP_DATABASE=${DB_DATABASE}
+      - DB_HKCCP_USERNAME=${DB_USERNAME}
+      - DB_HKCCP_PASSWORD=${DB_PASSWORD}
+      - DB_KOLAB_DATABASE=kolab
+      - DB_KOLAB_USERNAME=kolab
+      - DB_KOLAB_PASSWORD=Welcome2KolabSystems
+      - DB_RC_USERNAME=roundcube
+      - DB_RC_PASSWORD=Welcome2KolabSystems
       - IMAP_HOST=127.0.0.1
       - IMAP_PORT=11993
       - MAIL_HOST=127.0.0.1
diff --git a/docker/kolab/utils/02-write-my.cnf.sh b/docker/kolab/utils/02-write-my.cnf.sh
--- a/docker/kolab/utils/02-write-my.cnf.sh
+++ b/docker/kolab/utils/02-write-my.cnf.sh
@@ -4,5 +4,5 @@
 [client]
 host=${DB_HOST:-127.0.0.1}
 user=root
-password=${DB_ROOT_PASSWORD:-Welcome2KolabSystems}
+password=${DB_ROOT_PASSWORD}
 EOF
diff --git a/docker/kolab/utils/04-reset-mysql-kolab-password.sh b/docker/kolab/utils/04-reset-mysql-kolab-password.sh
--- a/docker/kolab/utils/04-reset-mysql-kolab-password.sh
+++ b/docker/kolab/utils/04-reset-mysql-kolab-password.sh
@@ -1,15 +1,20 @@
 #!/bin/bash
 
-sqlpw=$(grep ^sql_uri /etc/kolab/kolab.conf | awk -F':' '{print $3}' | awk -F'@' '{print $1}')
+mysql -h ${DB_HOST:-127.0.0.1} -u root --password=${DB_ROOT_PASSWORD} \
+    -e "SET PASSWORD FOR '${DB_HKCCP_USERNAME}'@'%' = PASSWORD('${DB_HKCCP_PASSWORD}');"
 
-mysql -h ${DB_HOST:-127.0.0.1} -u root --password=${DB_ROOT_PASSWORD:-Welcome2KolabSystems} \
-    -e "SET PASSWORD FOR '${DB_HKCCP_USERNAME:-kolabdev}'@'%' = PASSWORD('${DB_HKCCP_PASSWORD:-kolab}');"
+mysql -h ${DB_HOST:-127.0.0.1} -u root --password=${DB_ROOT_PASSWORD} \
+    -e "SET PASSWORD FOR '${DB_KOLAB_USERNAME}'@'localhost' = PASSWORD('${DB_KOLAB_PASSWORD}');"
 
-mysql -h ${DB_HOST:-127.0.0.1} -u root --password=${DB_ROOT_PASSWORD:-Welcome2KolabSystems} \
-    -e "SET PASSWORD FOR '${DB_KOLAB_USERNAME:-kolab}'@'%' = PASSWORD('${DB_KOLAB_PASSWORD:=$sqlpw}');"
+mysql -h ${DB_HOST:-127.0.0.1} -u root --password=${DB_ROOT_PASSWORD} \
+    -e "CREATE USER '${DB_KOLAB_USERNAME}'@'%' IDENTIFIED BY '${DB_KOLAB_PASSWORD}'; FLUSH PRIVILEGES;"
 
-mysql -h ${DB_HOST:-127.0.0.1} -u root --password=${DB_ROOT_PASSWORD:-Welcome2KolabSystems} \
-    -e "SET PASSWORD FOR '${DB_RC_USERNAME:-roundcube}'@'%' = PASSWORD('${DB_RC_PASSWORD:-Welcome2KolabSystems}');"
+mysql -h ${DB_HOST:-127.0.0.1} -u root --password=${DB_ROOT_PASSWORD} \
+    -e "SET PASSWORD FOR '${DB_RC_USERNAME}'@'localhost' = PASSWORD('${DB_RC_PASSWORD}');"
+
+mysql -h ${DB_HOST:-127.0.0.1} -u root --password=${DB_ROOT_PASSWORD} \
+    -e "CREATE USER '${DB_RC_USERNAME}'@'%' IDENTIFIED BY '${DB_RC_PASSWORD}'; FLUSH PRIVILEGES;"
+
+mysql -h ${DB_HOST:-127.0.0.1} -u root --password=${DB_ROOT_PASSWORD} \
+    -e "SET PASSWORD FOR '${DB_RC_USERNAME}'@'%' = PASSWORD('${DB_RC_PASSWORD}');"
 
-mysql -h ${DB_HOST:-127.0.0.1} -u root --password=${DB_ROOT_PASSWORD:-Welcome2KolabSystems} \
-    -e "CREATE USER '${DB_RC_USERNAME:-roundcube}'@'%' IDENTIFIED BY '${DB_RC_PASSWORD:-Welcome2KolabSystems}'; FLUSH PRIVILEGES;"
diff --git a/docker/kolab/utils/05-replace-localhost.sh b/docker/kolab/utils/05-replace-localhost.sh
--- a/docker/kolab/utils/05-replace-localhost.sh
+++ b/docker/kolab/utils/05-replace-localhost.sh
@@ -1,25 +1,25 @@
 #!/bin/bash
 
 if [[ ${DB_HOST} == "localhost" || ${DB_HOST} == "127.0.0.1" ]]; then
-    mysql -h ${DB_HOST:-127.0.0.1} -u root --password=${DB_ROOT_PASSWORD:-Welcome2KolabSystems} \
+    mysql -h ${DB_HOST} -u root --password=${DB_ROOT_PASSWORD} \
         -e "UPDATE mysql.db SET Host = '127.0.0.1' WHERE Host = 'localhost';"
     
-    mysql -h ${DB_HOST:-127.0.0.1} -u root --password=${DB_ROOT_PASSWORD:-Welcome2KolabSystems} \
+    mysql -h ${DB_HOST} -u root --password=${DB_ROOT_PASSWORD} \
         -e "FLUSH PRIVILEGES;"
 fi
 
 sed -i -e "s#^ldap_servers:.*#ldap_servers: ldap://${LDAP_HOST:-127.0.0.1}:389#" /etc/imapd.conf
 sed -i -e "/hosts/s/localhost/${LDAP_HOST:-127.0.0.1}/" /etc/iRony/dav.inc.php
 sed -i -e "s#^ldap_uri.*#ldap_uri = ldap://${LDAP_HOST:-127.0.0.1}:389#" \
-       -e "s#^cache_uri.*mysql://\(.*\):\(.*\)@\(.*\)\/\(.*\)#cache_uri = mysql://${DB_KOLAB_USERNAME:-\1}:${DB_KOLAB_PASSWORD:-\2}@${DB_HOST:-127.0.0.1}/${DB_KOLAB_DATABASE:-\4}#" \
-       -e "s#^sql_uri.*mysql://\(.*\):\(.*\)@\(.*\)\/\(.*\)#sql_uri = mysql://${DB_KOLAB_USERNAME:-\1}:${DB_KOLAB_PASSWORD:-\2}@${DB_HOST:-127.0.0.1}/${DB_KOLAB_DATABASE:-\4}#" \
+       -e "s#^cache_uri.*mysql://\(.*\):\(.*\)@\(.*\)\/\(.*\)#cache_uri = mysql://${DB_KOLAB_USERNAME}:${DB_KOLAB_PASSWORD}@${DB_HOST}/${DB_KOLAB_DATABASE}#" \
+       -e "s#^sql_uri.*mysql://\(.*\):\(.*\)@\(.*\)\/\(.*\)#sql_uri = mysql://${DB_KOLAB_USERNAME}:${DB_KOLAB_PASSWORD}@${DB_HOST}/${DB_KOLAB_DATABASE}#" \
        -e "s#^uri.*#uri = imaps://${IMAP_HOST:-127.0.0.1}:11993#" /etc/kolab/kolab.conf
 sed -i -e "/host/s/localhost/${LDAP_HOST:-127.0.0.1}/g" \
        -e "/fbsource/s/localhost/${IMAP_HOST:-127.0.0.1}/g" /etc/kolab-freebusy/config.ini
 #sed -i -e "s/server_host.*/server_host = ${LDAP_HOST:-127.0.0.1}/g" /etc/postfix/ldap/*
 sed -i -e "/password_ldap_host/s/localhost/${LDAP_HOST:-127.0.0.1}/" /etc/roundcubemail/password.inc.php
 sed -i -e "/hosts/s/localhost/${LDAP_HOST:-127.0.0.1}/" /etc/roundcubemail/kolab_auth.inc.php
-sed -i -e "s#.*db_dsnw.*#    \$config['db_dsnw'] = 'mysql://${DB_RC_USERNAME:-roundcube}:${DB_RC_PASSWORD:-Welcome2KolabSystems}@${DB_HOST:-127.0.0.1}/${DB_RC_DATABASE:-roundcube}';#" \
+sed -i -e "s#.*db_dsnw.*#    \$config['db_dsnw'] = 'mysql://${DB_RC_USERNAME}:${DB_RC_PASSWORD}@${DB_HOST}/roundcube';#" \
        -e "/default_host/s|= .*$|= 'ssl://${IMAP_HOST:-127.0.0.1}';|" \
        -e "/default_port/s|= .*$|= ${IMAP_PORT:-11993};|" \
        -e "/smtp_server/s|= .*$|= 'tls://${MAIL_HOST:-127.0.0.1}';|" \
diff --git a/docker/kolab/utils/06-mysql-for-kolabdev.sh b/docker/kolab/utils/06-mysql-for-kolabdev.sh
--- a/docker/kolab/utils/06-mysql-for-kolabdev.sh
+++ b/docker/kolab/utils/06-mysql-for-kolabdev.sh
@@ -1,11 +1,11 @@
 #!/bin/bash
 
-mysql -h ${DB_HOST:-127.0.0.1} -u root --password=${DB_ROOT_PASSWORD:-Welcome2KolabSystems} \
-    -e "CREATE DATABASE IF NOT EXISTS ${DB_HKCCP_DATABASE:-kolabdev};"
+mysql -h ${DB_HOST:-127.0.0.1} -u root --password=${DB_ROOT_PASSWORD} \
+    -e "CREATE DATABASE IF NOT EXISTS ${DB_HKCCP_DATABASE};"
 
-mysql -h ${DB_HOST:-127.0.0.1} -u root --password=${DB_ROOT_PASSWORD:-Welcome2KolabSystems} \
-    -e "GRANT ALL PRIVILEGES ON ${DB_HKCCP_DATABASE:-kolabdev}.* TO '${DB_HKCCP_USERNAME:-kolabdev}'@'%' IDENTIFIED BY '${DB_HKCCP_PASSWORD:-kolab}';"
+mysql -h ${DB_HOST:-127.0.0.1} -u root --password=${DB_ROOT_PASSWORD} \
+    -e "GRANT ALL PRIVILEGES ON ${DB_HKCCP_DATABASE}.* TO '${DB_HKCCP_USERNAME}'@'%' IDENTIFIED BY '${DB_HKCCP_PASSWORD}';"
 
-mysql -h ${DB_HOST:-127.0.0.1} -u root --password=${DB_ROOT_PASSWORD:-Welcome2KolabSystems} \
+mysql -h ${DB_HOST:-127.0.0.1} -u root --password=${DB_ROOT_PASSWORD} \
     -e "FLUSH PRIVILEGES;"