[Compose] Replace solr to Xapian (in dovecot)

First revision. Waiting on: https://github.com/grosjo/fts-xapian/issues/115

docker-compose.yml

@@ -151,7 +151,7 @@ services:
         - API_KEY_READ_ONLY=${API_KEY_READ_ONLY:-invalid}
         - API_ALLOW_FROM=${API_ALLOW_FROM:-invalid}
         - COMPOSE_PROJECT_NAME=${COMPOSE_PROJECT_NAME:-mailcow-dockerized}
-        - SKIP_SOLR=${SKIP_SOLR:-y}
+        - SKIP_XAPIAN=${SKIP_XAPIAN:-y}
         - SKIP_CLAMD=${SKIP_CLAMD:-n}
         - SKIP_SOGO=${SKIP_SOGO:-n}
         - ALLOW_ADMIN_EMAIL_LOGIN=${ALLOW_ADMIN_EMAIL_LOGIN:-n}
@@ -246,7 +246,8 @@ services:
         - ALLOW_ADMIN_EMAIL_LOGIN=${ALLOW_ADMIN_EMAIL_LOGIN:-n}
         - MAILDIR_GC_TIME=${MAILDIR_GC_TIME:-7200}
         - ACL_ANYONE=${ACL_ANYONE:-disallow}
-        - SKIP_SOLR=${SKIP_SOLR:-y}
+        - SKIP_XAPIAN=${SKIP_XAPIAN:-y}
+        - XAPIAN_HEAP=${XAPIAN_HEAP:-1024}
         - MAILDIR_SUB=${MAILDIR_SUB:-}
         - MASTER=${MASTER:-y}
         - REDIS_SLAVEOF_IP=${REDIS_SLAVEOF_IP:-}
@@ -523,22 +524,6 @@ services:
           aliases:
             - dockerapi
 
-    solr-mailcow:
-      image: mailcow/solr:1.8.1
-      restart: always
-      volumes:
-        - solr-vol-1:/opt/solr/server/solr/dovecot-fts/data:Z
-      ports:
-        - "${SOLR_PORT:-127.0.0.1:18983}:8983"
-      environment:
-        - TZ=${TZ}
-        - SOLR_HEAP=${SOLR_HEAP:-1024}
-        - SKIP_SOLR=${SKIP_SOLR:-y}
-      networks:
-        mailcow-network:
-          aliases:
-            - solr
-
     olefy-mailcow:
       image: mailcow/olefy:1.8.1
       restart: always
@@ -626,7 +611,6 @@ volumes:
   mysql-socket-vol-1:
   redis-vol-1:
   rspamd-vol-1:
-  solr-vol-1:
   postfix-vol-1:
   crypt-vol-1:
   sogo-web-vol-1: