Implement CIText as NOCASE alternative in postgresql

optional/postgresql/Dockerfile

@@ -7,7 +7,7 @@ RUN apk add --no-cache \
 RUN pip3 install jinja2
 # Image specific layers under this line
 RUN apk add --no-cache \
-    postgresql postgresql-libs \
+    postgresql postgresql-libs postgresql-contrib \
   && apk add --virtual .build-deps gcc musl-dev postgresql-dev python3-dev \
   && pip3 install psycopg2 anosql \
   && apk --purge del .build-deps

optional/postgresql/conf/queries.sql

@@ -34,3 +34,10 @@ select 1
 create
     database mailu
     owner mailu;
+
+-- name: create_citext!
+-- Install the CIText extension
+create
+    extension
+    if not exists
+    citext;

optional/postgresql/start.py

@@ -7,7 +7,7 @@ import glob
 import os
 
 def setup():
-    conn =  psycopg2.connect('user=postgres')
+    conn =  psycopg2.connect(user = 'postgres')
     queries = anosql.load_queries('postgres', '/conf/queries.sql')
     # Mailu user
     queries.create_mailu_user(conn)
@@ -21,6 +21,10 @@ def setup():
         queries.create_db(conn)
         conn.set_isolation_level(1)
     conn.close()
+    conn = psycopg2.connect(user = 'postgres', database= 'mailu')
+    queries.create_citext(conn)
+    conn.commit()
+    conn.close()
 
 # Bootstrap the database if postgresql is running for the first time
 if not os.path.exists('/var/lib/postgresql/data/pg_wal'):