Revert APIURL changes, it's impossible

Dockerfile

@@ -3,8 +3,8 @@ ARG APIURL
 WORKDIR /project
 ADD . /project/
 RUN go mod tidy
-RUN GOARCH=wasm GOOS=js go build -o web/app.wasm ./src
-RUN	go build -o app ./src
+RUN GOARCH=wasm GOOS=js go build -o web/app.wasm -ldflags="-X 'main.ApiURL=$APIURL'" ./src
+RUN	go build -o app -ldflags="-X 'main.ApiURL=$APIURL'" ./src
 
 FROM alpine:latest AS staging
 RUN apk --no-cache add ca-certificates

Makefile

@@ -1,10 +1,14 @@
-APIURL_prod := https://api.nicecock.eu/api
-APIURL_staging := https://api.nicecock.eu/api/testing
+APIURL_prod := https://api.quenten.nl/api
+APIURL_staging := https://api.quenten.nl/api/testing
 
 build:
 	GOARCH=wasm GOOS=js go build -o web/app.wasm -ldflags="-X 'main.ApiURL=${APIURL_staging}'"  ./src
 	go build -o app -ldflags="-X 'main.ApiURL=${APIURL_staging}'" ./src
 
+build-new:
+	GOARCH=wasm GOOS=js go build -o web/app.wasm ./src
+	go build -o app ./src
+
 build-prod:
 	GOARCH=wasm GOOS=js go build -o web/app.wasm -ldflags="-X 'main.ApiURL=${APIURL_prod}'" ./src
 	go build -o app -ldflags="-X 'main.ApiURL=${APIURL_prod}'" ./src
@@ -12,5 +16,8 @@ build-prod:
 run: build
 	./app
 
+run-new: build-new
+	APIURL=${APIURL_staging} ./app
+
 run-prod: build-prod
 	./app

src/homepage.go

@@ -10,6 +10,10 @@ import (
 	"github.com/maxence-charriere/go-app/v9/pkg/app"
 )
 
+var (
+	ApiURL string
+)
+
 type Homepage struct {
 	app.Compo
 }

src/main.go

@@ -4,7 +4,6 @@ import (
 	"compress/gzip"
 	"log"
 	"net/http"
-	"os"
 
 	"github.com/gorilla/handlers"
 	"github.com/maxence-charriere/go-app/v9/pkg/app"
@@ -16,10 +15,6 @@ import (
 //	collection *mongo.Collection
 //}
 
-var (
-	ApiURL string
-)
-
 func main() {
 	homepage := NewHomepage()
 	aboutpage := NewAboutPage()
@@ -40,11 +35,6 @@ func main() {
 	// It exits immediately on the server side
 	app.RunWhenOnBrowser()
 
-	ApiURL = os.Getenv("APIURL")
-	if ApiURL == "" {
-		log.Fatalln("Unable to get API URL from environment variables!")
-	}
-
 	icon := &app.Icon{
 		Default: "/web/static/images/icon-small.png",
 		Large:   "/web/static/images/icon.png",