docs(refactor): Restructure document hierarchy

Additionally rename `installation-examples.md` and split

docs/content/advanced/auth-ldap.md

@@ -1,124 +0,0 @@
----
-title: 'LDAP Authentication'
----
-
-## Introduction
-
-Getting started with ldap and this mailserver we need to take 3 parts in account:
-
-* POSTFIX
-* DOVECOT
-* SASLAUTHD (this can also be handled by dovecot above)
-
-## Variables to Control Provisioning by the Container
-
-__POSTFIX__:
-
-* `LDAP_QUERY_FILTER_USER`
-* `LDAP_QUERY_FILTER_GROUP`
-* `LDAP_QUERY_FILTER_ALIAS`
-* `LDAP_QUERY_FILTER_DOMAIN`
-
-__SASLAUTHD__:
-
-* `SASLAUTHD_LDAP_FILTER`
-
-__DOVECOT__:
-
-* `DOVECOT_USER_FILTER`
-* `DOVECOT_PASS_FILTER`
-
-!!! note
-    This page will provide several use cases like recipes to show, how this project can be used with it's LDAP Features.
-
-## LDAP Setup - Kopano / Zarafa
-
-```yaml
----
-version: '2'
-
-services:
-  mail:
-    image: tvial/docker-mailserver:latest
-    hostname: mail
-    domainname: domain.com
-    container_name: mail
-
-    ports:
-      - "25:25"
-      - "143:143"
-      - "587:587"
-      - "993:993"
-
-    volumes:
-      - maildata:/var/mail
-      - mailstate:/var/mail-state
-      - ./config/:/tmp/docker-mailserver/
-
-    environment:
-      # We are not using dovecot here
-      - SMTP_ONLY=1
-      - ENABLE_SPAMASSASSIN=1
-      - ENABLE_CLAMAV=1
-      - ENABLE_FAIL2BAN=1
-      - ENABLE_POSTGREY=1
-      - SASLAUTHD_PASSWD=
-
-      # >>> SASL Authentication
-      - ENABLE_SASLAUTHD=1
-      - SASLAUTHD_LDAP_SERVER=<yourLdapContainer/yourLdapServer>
-      - SASLAUTHD_LDAP_PROTO=
-      - SASLAUTHD_LDAP_BIND_DN=cn=Administrator,cn=Users,dc=mydomain,dc=loc
-      - SASLAUTHD_LDAP_PASSWORD=mypassword
-      - SASLAUTHD_LDAP_SEARCH_BASE=dc=mydomain,dc=loc
-      - SASLAUTHD_LDAP_FILTER=(&(sAMAccountName=%U)(objectClass=person))
-      - SASLAUTHD_MECHANISMS=ldap
-      # <<< SASL Authentication
-
-      # >>> Postfix Ldap Integration
-      - ENABLE_LDAP=1
-      - LDAP_SERVER_HOST=<yourLdapContainer/yourLdapServer>
-      - LDAP_SEARCH_BASE=dc=mydomain,dc=loc
-      - LDAP_BIND_DN=cn=Administrator,cn=Users,dc=mydomain,dc=loc
-      - LDAP_BIND_PW=mypassword
-      - LDAP_QUERY_FILTER_USER=(&(objectClass=user)(mail=%s))
-      - LDAP_QUERY_FILTER_GROUP=(&(objectclass=group)(mail=%s))
-      - LDAP_QUERY_FILTER_ALIAS=(&(objectClass=user)(otherMailbox=%s))
-      - LDAP_QUERY_FILTER_DOMAIN=(&(|(mail=*@%s)(mailalias=*@%s)(mailGroupMember=*@%s))(mailEnabled=TRUE))
-      # <<< Postfix Ldap Integration
-
-      # >>> Kopano Integration
-      - ENABLE_POSTFIX_VIRTUAL_TRANSPORT=1
-      - POSTFIX_DAGENT=lmtp:kopano:2003
-      # <<< Kopano Integration
-
-      - ONE_DIR=1
-      - DMS_DEBUG=0
-      - SSL_TYPE=letsencrypt
-      - PERMIT_DOCKER=host
-
-    cap_add:
-      - NET_ADMIN
-
-volumes:
-  maildata:
-    driver: local
-  mailstate:
-    driver: local
-```
-
-If your directory has not the postfix-book schema installed, then you must change the internal attribute handling for dovecot. For this you have to change the `pass_attr` and the `user_attr` mapping, as shown in the example below:
-
-```yaml
-- DOVECOT_PASS_ATTR=<YOUR_USER_IDENTIFYER_ATTRIBUTE>=user,<YOUR_USER_PASSWORD_ATTRIBUTE>=password
-- DOVECOT_USER_ATTR=<YOUR_USER_HOME_DIRECTORY_ATTRIBUTE>=home,<YOUR_USER_MAILSTORE_ATTRIBUTE>=mail,<YOUR_USER_MAIL_UID_ATTRIBUTE>=uid, <YOUR_USER_MAIL_GID_ATTRIBUTE>=gid
-```
-
-The following example illustrates this for a directory that has the qmail-schema installed and that uses `uid`:
-
-```yaml
-- DOVECOT_PASS_ATTRS=uid=user,userPassword=password
-- DOVECOT_USER_ATTRS=homeDirectory=home,qmailUID=uid,qmailGID=gid,mailMessageStore=mail
-- DOVECOT_PASS_FILTER=(&(objectClass=qmailUser)(uid=%u)(accountStatus=active))
-- DOVECOT_USER_FILTER=(&(objectClass=qmailUser)(uid=%u)(accountStatus=active))
-```