Move PGSQL to GHCR

Signed-off-by: Lukas Reschke <lukas@statuscode.ch>

.drone.yml

@@ -493,7 +493,7 @@ services:
 - name: cache
   image: ghcr.io/nextcloud/continuous-integration-redis:latest
 - name: postgres-9
-  image: postgres:9.6
+  image: ghcr.io/nextcloud/continuous-integration-postgres-9:postgres-9.6
   environment:
     POSTGRES_USER: oc_autotest
     POSTGRES_DB: oc_autotest_dummy
@@ -529,7 +529,7 @@ services:
 - name: cache
   image: ghcr.io/nextcloud/continuous-integration-redis:latest
 - name: postgres-10
-  image: postgres:10
+  image: ghcr.io/nextcloud/continuous-integration-postgres-10:postgres-10
   environment:
     POSTGRES_USER: oc_autotest
     POSTGRES_DB: oc_autotest_dummy
@@ -564,7 +564,7 @@ services:
 - name: cache
   image: ghcr.io/nextcloud/continuous-integration-redis:latest
 - name: postgres-11
-  image: postgres:11
+  image: ghcr.io/nextcloud/continuous-integration-postgres-11:postgres-11
   environment:
     POSTGRES_USER: oc_autotest
     POSTGRES_DB: oc_autotest_dummy
@@ -600,7 +600,7 @@ services:
 - name: cache
   image: ghcr.io/nextcloud/continuous-integration-redis:latest
 - name: postgres-12
-  image: postgres:12
+  image: ghcr.io/nextcloud/continuous-integration-postgres-12:postgres-12
   environment:
     POSTGRES_USER: oc_autotest
     POSTGRES_DB: oc_autotest_dummy
@@ -636,7 +636,7 @@ services:
 - name: cache
   image: ghcr.io/nextcloud/continuous-integration-redis:latest
 - name: postgres-13
-  image: postgres:13
+  image: ghcr.io/nextcloud/continuous-integration-postgres-13:postgres-13
   environment:
     POSTGRES_USER: oc_autotest
     POSTGRES_DB: oc_autotest_dummy