Updated Dockerfile and woodpecker to use private Gitea login credentials

.woodpecker/build-image.yml

@@ -5,13 +5,21 @@ when:
 steps:
   - name: build-and-push-image
     image: harbor.maximumdirect.net/proxy-dockerhub/woodpeckerci/plugin-kaniko
+    environment:
+      GITEA_USER:
+        from_secret: GITEA_USER
+      GITEA_TOKEN:
+        from_secret: GITEA_TOKEN
     settings:
       registry: harbor.maximumdirect.net
       repo: build/weatherapi
       auto_tag: true 
+      build_args_from_env:
+        - GITEA_USER
+        - GITEA_TOKEN
       username:
         from_secret: HARBOR_ROBOT_USER
       password:
         from_secret: HARBOR_ROBOT_TOKEN
       cache: true
-      cache_repo: build-cache/weatherapi
+      cache_repo: build-cache/weatherapi