add woodpacker ci file

woodpacker.yml

@@ -1,3 +1,36 @@
 steps:
-  buildDocs:
-    image: woodpeckerci/plugin-mkdocs:latest
+  build-docs:
+    # build the docs in /docs with mkdocs and
+    # add the .domains file for codeberg pages
+    image: squidfunk/mkdocs-material
+    commands:
+      - mkdocs build -f ./mkdocs.yml -d docs_build
+      - git switch --orphan pages
+      - mv docs_build/* .
+      - echo -e 'openfindata.org\nopenfindata.codeberg.page\npages.openfindata.codeberg.page' > .domains
+    when:
+      path:
+        include:
+          - 'mkdocs.yml'
+          - 'docs/**'
+
+  deploy-docs:
+    # Push the resulting files to openfindata/pages
+    # to deploy
+    name: Push built docs to codeberg pages
+    image: appleboy/drone-git-push
+    settings:
+      branch: main
+      remote: git@codeberg.org:openfindata/pages.git
+      force: true
+      commit: true
+      ssh_key:
+        # created using woodpecker cli with:
+        # woodpecker secret add -repository openfindata/openfindata \
+        # -name codeberg_push_from_ci_priv_key -value @<path_to_privkey_file>
+        from_secret: codeberg_push_from_ci_priv_key
+    when:
+      path:
+        include:
+          - 'mkdocs.yml'
+          - 'docs/**'