Update docker base config

docker/example-config.yaml

@@ -5,6 +5,18 @@
 #   Postgres: postgres://username:password@hostname/dbname
 database: sqlite:////data/maubot.db
 
+# Database for encryption data.
+crypto_database:
+    # Type of database. Either "default", "pickle" or "postgres".
+    # When set to default, using SQLite as the main database will use pickle as the crypto database
+    # and using Postgres as the main database will use the same one as the crypto database.
+    #
+    # When using pickle, individual crypto databases are stored in the pickle_dir directory.
+    # When using non-default postgres, postgres_uri is used to connect to postgres.
+    type: default
+    postgres_uri: postgres://username:password@hostname/dbname
+    pickle_dir: /data/crypto
+
 plugin_directories:
     # The directory where uploaded new plugins should be stored.
     upload: /data/plugins

docker/run.sh

@@ -6,7 +6,7 @@ function fixperms {
 
 cd /opt/maubot
 
-mkdir -p /var/log/maubot /data/plugins /data/trash /data/dbs
+mkdir -p /var/log/maubot /data/plugins /data/trash /data/dbs /data/crypto
 
 if [ ! -f /data/config.yaml ]; then
 	cp docker/example-config.yaml /data/config.yaml