Add integration tests

.drone.yml

@@ -1,4 +1,11 @@
 build:
+  integration:
+    image: morrisjobke/nextcloud-ci-php7:1.0.3
+    commands:
+      - git submodule update --init
+      - ./occ maintenance:install --admin-pass=admin
+      - cd build/integration
+      - ./run.sh
   jsunit:
     image: morrisjobke/nextcloud-ci-jsunit:1.0.2
     commands:

build/integration/run.sh

@@ -1,5 +1,14 @@
 #!/usr/bin/env bash
 
+COMPOSER=$(which composer)
+
+if [ -x "$COMPOSER" ]; then
+	echo "Using composer executable $COMPOSER"
+else
+	echo "Could not find composer executable" >&2
+	exit 1
+fi
+
 composer install
 
 SCENARIO_TO_RUN=$1