Updated Dockerfile and Woodpecker pipeline to use harbor.maximumdirect.net proxy cache for upstream images.

.woodpecker/build-image.yml

@@ -4,7 +4,7 @@ when:
 
 steps:
   - name: build-and-push-image
-    image: https://harbor.maximumdirect.net/dockerhub-proxy/woodpeckerci/plugin-kaniko
+    image: harbor.maximumdirect.net/proxy-dockerhub/woodpeckerci/plugin-kaniko
     settings:
       registry: harbor.maximumdirect.net
       repo: build/weatherfeeder

Dockerfile

@@ -5,7 +5,7 @@ ARG GO_VERSION=1.25
 ############################
 # Build stage
 ############################
-FROM golang:${GO_VERSION}-bookworm AS build
+FROM harbor.maximumdirect.net/proxy-dockerhub/golang:${GO_VERSION}-bookworm AS build
 
 WORKDIR /src
 
@@ -52,7 +52,7 @@ RUN --mount=type=cache,target=/root/.cache/go-build \
 ############################
 # Runtime stage
 ############################
-FROM debian:bookworm-slim AS runtime
+FROM harbor.maximumdirect.net/proxy-dockerhub/debian:bookworm-slim AS runtime
 
 # Install runtime necessities
 RUN apt-get update && apt-get install -y --no-install-recommends \