ci: Add Woodpecker workflow

.woodpecker/build-site.yml

@@ -0,0 +1,29 @@
+when:
+  branch: "master"
+
+steps:
+  - name: Decrypt repository
+    image: truemark/git-crypt:beta-0.7.0-alpine-3.17
+    commands:
+      - echo "${GIT_CRYPT_KEY}" | base64 --decode > ./.git-crypt-key
+      - git-crypt unlock ./.git-crypt-key
+      - rm ./.git-crypt-key
+    secrets:
+      - git_crypt_key
+  - name: Install Node packages
+    image: node:18.14.2-slim
+    commands:
+      - npm ci
+  - name: Build Hugo site
+    image: peaceiris/hugo:v0.111.3-full
+    environment:
+      HUGO_ENV: production
+      HUGO_ENVIRONMENT: production
+    commands:
+      - hugo --minify
+  - name: Deploy to pages
+    image: codeberg.org/xfix/plugin-codeberg-pages-deploy:1
+    settings:
+      folder: public
+      ssh_key:
+        from_secret: ssh_key