feat(controller): intial build functions setup in go and service building

controller/Dockerfile

@@ -0,0 +1,71 @@
+# # ---- Builder Stage ----
+# FROM golang:1.24.4-alpine3.22 AS builder
+
+# WORKDIR /app/controller
+
+# # Copy Go module manifests
+# COPY controller/go.mod controller/go.sum ./
+# RUN go mod download
+
+# # Copy the controller source code
+# COPY controller/ ./
+
+# # Build the binary
+# RUN CGO_ENABLED=0 GOOS=linux go build -o /app/lst_ctl .
+
+
+# # ---- Runtime Stage ----
+# FROM alpine:latest
+
+# WORKDIR /root/
+
+# # Copy only the binary (no need for sources)
+# COPY --from=builder /app/lst_ctl .
+
+# # (Optional) Persist data output if controller writes files
+# RUN mkdir -p /data
+# VOLUME /data
+
+# # Expose Gin API port
+# EXPOSE 8080
+
+# ENV RUNNING_IN_DOCKER=true
+
+# CMD ["./lst_ctl"]
+
+# ---- Build Go binary ----
+FROM golang:1.24.4-alpine3.22 AS gobuilder
+
+WORKDIR /src
+
+# copy controller module
+COPY controller/go.mod controller/go.sum ./
+RUN go mod download
+
+# copy all controller source code
+COPY controller/ ./
+
+# build binary into /bin
+RUN CGO_ENABLED=0 GOOS=linux go build -o /bin/lst_ctl .
+
+
+# ---- Runtime with Node ----
+FROM node:20-alpine
+
+WORKDIR /app
+
+# copy binary from builder
+COPY --from=gobuilder /bin/lst_ctl /usr/local/bin/lst_ctl
+
+# copy repo root into /app (npm needs package.json, dist/, frontend/, etc)
+COPY . .
+
+# clear Node's default entrypoint (Docker Hub node images use ["docker-entrypoint.sh"])
+ENTRYPOINT []
+
+# expose gin api
+EXPOSE 8080
+ENV RUNNING_IN_DOCKER=true
+
+# run binary (in PATH now, since it's under /usr/local/bin)
+CMD ["lst_ctl"]