Add postgres to CI

.drone.yml

@@ -17,7 +17,19 @@ build:
       - git submodule update --init
       - ./occ maintenance:install --database-name oc_autotest --database-user oc_autotest --admin-user admin --admin-pass admin --database sqlite --database-pass=''
       - ./autotest.sh sqlite
+  postgres:
+    image: morrisjobke/nextcloud-ci-php7:1.0
+    commands:
+      - sleep 10 # gives the database enough time to initialize
+      - rm -rf data/* config/config.php # TODO: remove this - temporary fix for CI issues
+      - git submodule update --init
+      - ./autotest.sh pgsql
 
 compose:
   cache:
     image: redis
+  postgres:
+    image: postgres
+    environment:
+      - POSTGRES_USER=oc_autotest
+      - POSTGRES_PASSWORD=oc_autotest

autotest.sh

@@ -253,7 +253,9 @@ function execute_tests {
 
 			echo "Postgres is up."
 		else
-			dropdb -U "$DATABASEUSER" "$DATABASENAME" || true
+			if [ -z "$DRONE" ] ; then # no need to drop the DB when we are on CI
+				dropdb -U "$DATABASEUSER" "$DATABASENAME" || true
+			fi
 		fi
 	fi
 	if [ "$DB" == "oci" ] ; then