chore: grpc + mtls working

agent/dockerfile

@@ -2,16 +2,20 @@ FROM golang:1.26.1 as builder
 
 WORKDIR /app
 
-COPY go.mod go.sum ./
+COPY agent/ agent/
+COPY proto/ proto/
+WORKDIR /app/agent
 RUN --mount=type=cache,target=/go/pkg/mod \
   --mount=type=cache,target=/root/.cache/go-build \
   go mod download
 
-COPY . .
-ENV CGO_ENABLED=0
+COPY agent/ agent/
+COPY proto/ proto/
+WORKDIR /app/agent
 RUN --mount=type=cache,target=/go/pkg/mod \
   --mount=type=cache,target=/root/.cache/go-build \
-  go build -ldflags "-s -w" -o agent ./main.go
+  go mod tidy && \
+  CGO_ENABLED=0 go build -ldflags "-s -w" -o agent ./main.go
 
 FROM debian:bookworm-slim
 
@@ -21,6 +25,6 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 
 WORKDIR /app
 
-COPY --from=builder /app/agent .
+COPY --from=builder /app/agent/agent .
 
 CMD ["./agent"]