build: split workflow in two files

.woodpecker/main.yaml

@@ -0,0 +1,29 @@
+when:
+  event:
+    - push
+    - pull_request
+    - manual
+  branch:
+    - main 
+
+steps:
+  - name: build
+    image: alpine:3.17.2
+    commands:
+      - apk update
+      - apk add zola
+      - zola build
+
+  - name: upload
+    image: plugins/s3
+    settings:
+      bucket: guide.deuxfleurs.fr
+      endpoint: https://garage.deuxfleurs.fr
+      region: garage
+      access_key:
+        from_secret: aws_access_key_id
+      secret_key:
+        from_secret: aws_secret_access_key
+      source: public/**/*
+      target: /
+      strip_prefix: public/

.woodpecker/preprod.yaml

@@ -1,3 +1,11 @@
+when:
+  event:
+    - push
+    - pull_request
+    - manual
+  branch:
+    - preprod
+
 steps:
   - name: build
     image: alpine:3.17.2
@@ -7,26 +15,6 @@ steps:
       - zola build
 
   - name: upload
-    when:
-      branch:
-        - main
-    image: plugins/s3
-    settings:
-      bucket: guide.deuxfleurs.fr
-      endpoint: https://garage.deuxfleurs.fr
-      region: garage
-      access_key:
-        from_secret: aws_access_key_id
-      secret_key:
-        from_secret: aws_secret_access_key
-      source: public/**/*
-      target: /
-      strip_prefix: public/
-
-  - name: upload
-    when:
-      branch:
-        - preprod
     image: plugins/s3
     settings:
       bucket: preprod-guide