Update the docker tag for ansible

Signed-off-by: Noah Knegt <git@noahknegt.com>

.drone.yml

@@ -23,8 +23,18 @@ steps:
     environment:
       SSH_KEY:
         from_secret: ssh_key
+    when:
+      event:
+        - push
+      branch:
+        - master
 
   - name: ansible apply
-    image: cytopia/ansible:alpine
+    image: cytopia/ansible:infra
     commands:
       - ansible-playbook -i inventory/hosts site.yml --private-key /drone/src/.ssh/id_ed25519
+    when:
+      event:
+        - push
+      branch:
+        - master