add woodpecker configs

.woodpecker/dns.yml

@@ -0,0 +1,33 @@
+pipeline:
+  validate:
+    image: alpine
+    when:
+      path: "dns/**"
+      event: pull_request
+    secrets:
+      - linode_token
+    commands:
+      - apk add --no-cache terraform
+      - terraform version
+      - |
+        cd dns
+        echo 'token = "$${LINODE_TOKEN}"' > .auto.tfvars
+        terraform validate
+        terraform plan
+
+  deploy:
+    image: alpine
+    when:
+      path: "dns/**"
+      event: push
+    secrets:
+      - linode_token
+    commands:
+      - apk add --no-cache terraform
+      - terraform version
+      - |
+        cd dns
+        echo 'token = "$${LINODE_TOKEN}"' > .auto.tfvars
+        terraform validate
+        terraform plan -out deploy.plan
+        terraform apply deploy.plan