feat: Add Dockerfile for multi-stage build and containerization of the gopen-api application

Author: UltimateForm

Dockerfile

@@ -0,0 +1,10 @@
+FROM golang:1.24.13-alpine3.22 AS build
+
+COPY . /app
+WORKDIR /app
+RUN go build -o gopen-api
+
+FROM alpine:3.22 AS run
+COPY --from=build /app/gopen-api /app/gopen-api
+WORKDIR /app
+CMD ["./gopen-api"]