diff --git a/Dockerfile b/Dockerfile
index 10f29da..3a9c6a0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -36,7 +36,8 @@ RUN npm run build:ts
 
 # Build Go binary (cached unless Go files or generated code changes)
 RUN --mount=type=cache,target=/root/go/pkg/mod \
-  CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o main ./cmd/server
+  --mount=type=cache,target=/root/.cache/go-build \
+  CGO_ENABLED=0 GOOS=linux go build -installsuffix cgo -o main ./cmd/server
 
 # Test runner stage - includes Go runtime and test dependencies
 # This stage is ONLY used for running tests, never deployed to production