Use url from config

e2e/e2e_tests.go

@@ -1,7 +1,6 @@
 package e2e
 
 import (
-	"fmt"
 	"gitlab.hpi.de/codeocean/codemoon/poseidon/api"
 	"gitlab.hpi.de/codeocean/codemoon/poseidon/config"
 	"strings"
@@ -13,7 +12,7 @@ import (
 * For the e2e tests a nomad cluster must be connected and poseidon must be running.
  */
 
-var baseURL = fmt.Sprintf("http://%s:%d", config.Config.Server.Address, config.Config.Server.Port)
+var baseURL = config.Config.PoseidonAPIURL().String()
 
 func buildURL(parts ...string) (url string) {
 	parts = append([]string{baseURL, api.RouteBase}, parts...)