go backend (#1)

Reviewed-on: yw5n/yw5ncom#1

Dockerfile

@@ -1,4 +1,10 @@
-FROM docker.io/nginx:latest
-COPY nginx.conf /etc/nginx/conf.d/default.conf
-COPY html/ /usr/share/nginx/html/
-COPY static/ /usr/share/nginx/static/
+FROM docker.io/golang:1.23 as build
+COPY src/ .
+RUN printf 'module yw5n\ngo 1.23' > go.mod && CGO_ENABLED=0 go build -o /app
+
+FROM scratch
+COPY --from=build /app /app
+COPY static/ /static/
+COPY html/ /html/
+EXPOSE 3000
+CMD ["/app"]