diff --git a/lxc-apps/ckan/ckan.image b/lxc-apps/ckan/ckan.image
index 22bfb99..dbe2db1 100644
--- a/lxc-apps/ckan/ckan.image
+++ b/lxc-apps/ckan/ckan.image
@@ -28,6 +28,10 @@ RUN EOF
     pip install -r /srv/ckan/src/ckanext-geoview/pip-requirements.txt
     pip install -r /srv/ckan/src/ckanext-dgvat-xls/requirements.txt
 
+    # Hackfix support for PostgreSQL 12
+    # https://github.com/sqlalchemy/sqlalchemy/issues/4463
+    sed -i 's/cons\.consrc/pg_get_constraintdef(cons.oid)/' /usr/lib/python2.7/site-packages/sqlalchemy/dialects/postgresql/base.py
+
     # Create OS user
     addgroup -S -g 8080 ckan
     adduser -S -u 8080 -h /srv/ckan -s /bin/false -g ckan -G ckan ckan
diff --git a/lxc-apps/ckan/install.sh b/lxc-apps/ckan/install.sh
index 3405208..23f0ae6 100755
--- a/lxc-apps/ckan/install.sh
+++ b/lxc-apps/ckan/install.sh
@@ -67,7 +67,7 @@ chown -R 108080:108080 ${CKAN_DATA}
 # Populate database
 spoc-container exec ckan -- paster --plugin=ckan db init -c /etc/ckan/ckan.ini
 spoc-container exec ckan -- paster --plugin=ckanext-spatial spatial initdb -c /etc/ckan/ckan.ini
-spoc-container exec ckan -- paster --plugin=ckan datastore set-permissions -c /etc/ckan/ckan.ini | lxc-attach -u 5432 -g 5432 ckan-postgres -- psql
+spoc-container exec ckan -- paster --plugin=ckan datastore set-permissions -c /etc/ckan/ckan.ini | spoc-container exec ckan-postgres -- psql
 
 # Create admin account
 export CKAN_ADMIN_USER="admin"