build: integration testing postegres on ci.

docker/blocks/postgres/docker-compose.yaml

@@ -1,5 +1,5 @@
   postgrestest:
-    image: postgres:latest
+    image: postgres:9.3
     environment:
       POSTGRES_USER: grafana
       POSTGRES_PASSWORD: password
@@ -13,4 +13,4 @@
     network_mode: bridge
     environment:
       FD_DATASOURCE: postgres
-      FD_PORT: 5432
+      FD_PORT: 5432

docker/blocks/postgres_tests/Dockerfile

@@ -1,3 +1,3 @@
-FROM postgres:latest
+FROM postgres:9.3
 ADD setup.sql /docker-entrypoint-initdb.d
-CMD ["postgres"]
+CMD ["postgres"]

docker/blocks/postgres_tests/setup.sql

@@ -1,3 +1,3 @@
 CREATE DATABASE grafanadstest;
 REVOKE CONNECT ON DATABASE grafanadstest FROM PUBLIC;
-GRANT CONNECT ON DATABASE grafanadstest TO grafanatest;
+GRANT CONNECT ON DATABASE grafanadstest TO grafanatest;