add Dokerfile und anpassungen um es im container ausführen kön können

Dockerfile

@@ -0,0 +1,36 @@
+FROM golang:alpine as builder
+
+RUN apk --no-cache add --update \
+	gcc 			\
+	musl-dev		\
+	git			\
+	ca-certificates
+WORKDIR /go/src/gitea.ckris.de/titzi/anmeldeportal_hochzeit
+RUN CGO_ENABLED=1 go get -d -v github.com/mattn/go-sqlite3
+COPY backend/go/src/server/main.go .
+RUN CGO_ENABLED=1 GOOS=linux go build -a -installsuffix cgo -o backend .
+
+
+
+FROM alpine:latest
+
+RUN apk --no-cache add --update \
+	gcc 			\
+	musl-dev
+
+WORKDIR /go/
+
+COPY --from=builder /go/src/gitea.ckris.de/titzi/anmeldeportal_hochzeit/backend .
+COPY frontend/assets ./frontend/assets/
+COPY frontend/js ./frontend/js/
+COPY frontend/css ./frontend/css/
+COPY frontend/index.html ./frontend/
+
+RUN addgroup -g 3333 -S go 		&& \
+    adduser -h /go -u 3333 -G go -S go  && \
+    chown -R go:go .
+USER go
+
+EXPOSE 8080
+
+CMD ["./backend"]

backend/go/src/server/main.go

@@ -102,7 +102,8 @@ func main() {
 	defer db.Close()
 
 	// init http server with two routes for onepage website and endpoint for sending the response
-	http.Handle("/", httpLogHandler(http.FileServer(http.Dir("../../../../frontend"))))
+	// http.Handle("/", httpLogHandler(http.FileServer(http.Dir("../../../../frontend"))))
+	http.Handle("/", httpLogHandler(http.FileServer(http.Dir("./frontend"))))
 	http.HandleFunc("/response", func(w http.ResponseWriter, r *http.Request) {
 		processAnmeldung(w, r, db)
 	})