diff --git a/Dockerfile b/Dockerfile
index d0c18ca..9d020e6 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -134,7 +134,10 @@ RUN ln -sf /proc/1/fd/1 /var/log/apache2/access.log \
   && ln -sf /proc/1/fd/2 /var/log/apache2/error.log
 
 # Configure PosgtreSQL
-RUN chown -R postgres:postgres /var/lib/postgresql
+COPY postgresql.custom.conf /etc/postgresql/10/main/
+RUN chown -R postgres:postgres /var/lib/postgresql \
+  && chown postgres:postgres /etc/postgresql/10/main/postgresql.custom.conf \
+  && echo "\ninclude 'postgresql.custom.conf'" >> /etc/postgresql/10/main/postgresql.conf
 
 # Start running
 COPY run.sh /
diff --git a/postgresql.custom.conf b/postgresql.custom.conf
new file mode 100644
index 0000000..8bf2399
--- /dev/null
+++ b/postgresql.custom.conf
@@ -0,0 +1,8 @@
+# Suggested minimal settings from
+# https://ircama.github.io/osm-carto-tutorials/tile-server-ubuntu/
+
+shared_buffers = 128MB
+min_wal_size = 1GB
+max_wal_size = 2GB
+work_mem = 32MB
+maintenance_work_mem = 256MB