use a dummy database name for the default postgres database name

For some reason the docker image does not setup the permissions correctly,
by using a different name the nextcloud installer will create the database instead
with the correct permissions

Signed-off-by: Robin Appelman <robin@icewind.nl>

.drone.yml

@@ -197,7 +197,7 @@ pipeline:
     image: nextcloudci/php5.6:php5.6-8
     commands:
       - sleep 10 # gives the database enough time to initialize
-      - NOCOVERAGE=true TEST_SELECTION=DB ./autotest.sh pgsql
+      - POSTGRES=${POSTGRES} NOCOVERAGE=true TEST_SELECTION=DB ./autotest.sh pgsql
     when:
       matrix:
         DB: postgres
@@ -649,6 +649,7 @@ services:
     image: postgres:9
     environment:
       - POSTGRES_USER=oc_autotest
+      - POSTGRES_DB=oc_autotest_dummy
       - POSTGRES_PASSWORD=owncloud
     tmpfs:
       - /var/lib/postgresql/data