move image to pipeline level

.drone.yml

@@ -2,6 +2,12 @@ kind: pipeline
 type: docker
 name: deploy
 
+platform:
+  os: linux
+  arch: amd64
+
+image: bitnami/git:2.39.2
+
 environment:
   BRANCH: main
   DOKKU_HOST: apps1.fnukinternal.net
@@ -13,7 +19,6 @@ environment:
 steps:
 - name: configure-environment
   pull: always
-  image: bitnami/git:2.39.2
   environment:
   SSH_PRIVATE_KEY:
     from_secret: dokku_ssh_key
@@ -32,11 +37,9 @@ steps:
   - chmod 600 ~/.ssh/id_rsa
   - apt-get update && apt-get install git -y
 - name: add-remote
-  image: bitnami/git:2.39.2
   commands:
   - git remote add dokku dokku:$DOKKU_APP_NAME
 - name: push-to-dokku
-  image: bitnami/git:2.39.2
   commands:
   - git push dokku $BRANCH