update dynamic LoginName

caddy/Dockerfile.caddy

@@ -7,7 +7,16 @@ RUN xcaddy build ${CADDY_VERSION} \
   --with github.com/caddy-dns/cloudflare \
   --with github.com/caddyserver/replace-response
 
+# Autodiscover Handler in Go bauen (Go ist im Builder-Image bereits verfügbar)
+COPY autodiscover-handler.go /src/autodiscover-handler.go
+WORKDIR /src
+RUN CGO_ENABLED=0 go build -ldflags="-s -w" -o /usr/bin/autodiscover-handler autodiscover-handler.go
+
 FROM caddy:${CADDY_VERSION}
 COPY --from=builder /usr/bin/caddy /usr/bin/caddy
-RUN mkdir -p /var/log/caddy
+COPY --from=builder /usr/bin/autodiscover-handler /usr/local/bin/autodiscover-handler
+COPY start.sh /usr/local/bin/start.sh
+RUN chmod +x /usr/local/bin/start.sh /usr/local/bin/autodiscover-handler \
+    && mkdir -p /var/log/caddy
 
+CMD ["/usr/local/bin/start.sh"]