added woodpecker build

.woodpecker/main.yml

@@ -0,0 +1,15 @@
+steps: 
+  build:
+    image: ruby:latest
+    commands: 
+      - cd main && bundle && bundle exec jekyll build
+  deploy:
+    image: debian:latest
+    when:
+      - event: push
+        branch: master
+    commands: 
+      - rm -rf /var/www/ellpeck/*
+      - cp -r main/_site/. /var/www/ellpeck
+    volumes:
+      - /var/www/ellpeck:/var/www/ellpeck