diff --git a/Dockerfile b/Dockerfile
index b05ffc6..f0ca672 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,16 @@
 FROM golang:1.26-alpine AS build
 WORKDIR /src
+
+# Fetch internal gitea-hosted Go modules (e.g. mcp-chassis) without going
+# through proxy.golang.org and without HTTP→HTTPS surprises. Gitea returns
+# http:// in its go-import meta tag, so rewrite to https here and bypass
+# the module proxy + sumdb.
+RUN apk add --no-cache git && \
+    git config --global url."https://gitea.d-ma.be/".insteadOf "http://gitea.d-ma.be/"
+ENV GOPRIVATE=gitea.d-ma.be
+ENV GOPROXY=direct
+ENV GOSUMDB=off
+
 COPY go.mod go.sum ./
 RUN go mod download
 COPY . .